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Life Science
Introductory Message
For the facilitator:
Welcome to the Earth and Life Science Grade 11 Alternative Delivery Mode (ADM) Module.
This module was collaboratively designed, developed, and reviewed by educators both from public and private
institutions to assist you, the teacher or facilitator, in helping the learners meet the standards set by the K to 12
Curriculum while overcoming their personal, social, and economic constraints in schooling.
This learning resource hopes to engage the learners into guided and independent learning activities at their own
pace and time. Furthermore, this also aims to help learners acquire the needed 21st century skills while taking into
consideration their needs and circumstances.
As a facilitator, you are expected to orient the learners on how to use this module, encourage and assist them as
they do the tasks, and track their progress while allowing to manage their learnings.
Welcome to the Earth and Life Science Grade 11 Alternative Delivery Mode (ADM) Module.
The hand is one of the most symbolized parts of the human body. It is often used to depict skill, action, and purpose.
Through our hands, we may learn, create, and accomplish many things. Hence, the hand in this learning resource
signifies that you, as a learner, are capable and empowered to successfully achieve the relevant competencies and
skills at your own pace and time. Your academic success lies in your own hands!
This module was designed to provide you with fun and meaningful opportunities for guided and independent
learning. You will be enable to process the contents of the learning resource while being an active learner.
What I Need to Know This will give you an idea of the skills or competencies you are expected to learn in the
module.
What I Know This part includes an activity that aims to check what you already know about the lesson
to take. If you get all the answers correct (100%), you may decide to skip this module.
What’s In This is a brief drill or review to help you link the current lesson with the previous one.
What’s New In this portion, the new lesson will be introduced to you in various ways such as a story,
a song, a poem, a problem opener, an activity or a situation.
What is It This section provides a brief discussion of the lesson. This aims to help you discover
and understand new concepts and skills.
What’s More This comprises activities for independent practice to solidify your understanding and
skills of the topic. You may check the answers to the exercises using the Answer Key at
the end of the module.
What I Have Learned This includes questions or blank sentence/paragraph to be filled in to process what you
learned from the lesson.
What I Can Do This section provides an activity which will help you transfer your new knowledge or
skill into real life situations or concerns.
Assessment This is a task which aims to evaluate your level of mastery in achieving the learning
competency.
Additional Activities In this portion, another activity will be given to you to enrich your knowledge or skill of
the lesson learned. This also tends retention of learned concepts.
Answer Key This contains answers to all activities in the module.
At the end of this module you will also find:
1
Week
1
What I Need to Know
This module was designed and written with you in mind. It is here to help you master
the nature of Earth and Life Science. The scope of this module permits it to be used
in many different learning situations. The language used recognizes the diverse
vocabulary level of students. The lessons are arranged to follow the standard
sequence of the course. But the order in which you read them can be changed to
correspond with the textbook you are now using.
What I Know
Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.
1. Why is Earth called “the living planet?”
A. It sustains life. C. It has water at the surface
B. It has atmosphere D. All of the above
2. Which among the set of planets are called terrestrial?
A. Jupiter, Neptune, Uranus
B. Mercury, Venus, Mars, Earth
C. Earth, Venus, Mars, Jupiter
D. Jupiter, Saturn, Uranus, Neptune
3. What makes planet Earth uniquely different from other planets?
A. It has soil. C. It has people.
B. It has tress. D. It has liquid water.
4. What makes planet Earth habitable?
A. It has comfortable distance from the sun.
B. It has atmosphere that protects from radiation.
C. The atmosphere holds carbon dioxide and other gases.
D. All of the above
5. Why is Earth called a terrestrial planet?
A. It has life C. It is farther from the sun
B. It is closest to the sun D. It is placed at almost the middle planets
6. Which of the following best describes the surface of the planet Earth?
A. a thick layer of hydrogen gas
B. cloudy and hot with lots of volcano
C. cold, rocky, and covered with red dust
D. mostly water surface with some areas of land
2
7. What makes Earth different from other planets in the solar system?
A. It supports life.
B. It is mostly covered in water.
C. Its atmosphere is mostly nitrogen and oxygen.
D. All of the above
8. Earth is the only planet that can support ___
A. life C. a rocky core
B. a moon D. an atmosphere
9. How many percent of water comprises the Earth?
A. 15% C. 50%
B. 30% D. 70%
10. What are the factors that make Earth habitable?
A. temperature and nutrient C. only A
B. atmosphere and energy D. both A and B
11. What nutrients does the Earth have to maintain an organism’s body to
survive?
A. Earth has a water cycle and atmosphere
B. Earth has volcanic activities to circulate nutrients.
C. Earth has sub-surface water or molten rock that can circulate and
replenish nutrients for organisms.
D. All of the above
12. What makes Earth similar to Venus?
A. Earth and Venus are the right sizes to hold a sufficient atmosphere.
B. Venus’ atmosphere is 100 times thicker than Earth.
C. Among all the solid planets and moons, only Earth, Venus, and Titan
have significant atmospheres.
D. Both A and C
13. Why are humans and other living organisms capable to live on earth?
A. Earth has no protective equipment like ozone.
B. Earth has layer water only for favorable climate.
C. Earth has man-made natural cycles
D. Earth’s temperature is neither the hottest nor the coldest among other
planets.
14. What makes Earth different from any other planets in the Solar System?
A. It is the only rocky planet.
B. It is the only planet that turns around in space.
C. It is the only planet that has a large amount of liquid water.
D. It is the only planet that changes its structure
15. What does Earth offer to human for survival?
A. Earth has abundant plant life.
B. Earth has sufficient nutrients from ocean to land.
C. Only A
D. Both A and B.
3
Lesson 1 Origin and Structure of the Earth-
Planet Earth
Earth is the only planet in the solar system known to harbour life. Our planet’s has
molten nickel-iron core give rise to an extensive magnetic field, which, along with the
atmosphere, shields us from harmful radiation coming from the Sun. In this module,
you will understand why this planet is called the “living planet.”
What’s In
Just a part of the vast universe is the solar system. From the previous concepts
learned, identify the planets in the solar system in the given illustration.
Question: What do you think are the characteristics of the planet Earth that make
it different from all the other planets?
4
What’s New
Temperature Low temperatures Life seems to be At about 125oC, protein Surface: only the Earth’s
influences how cause chemicals to limited to a and carbohydrate surface is in this temperature
quickly atoms react slowly, which temperature range of molecules, and the genetic range. Sub-surface: the
and molecules interferes with the -15oC to 115oC. In material (e.g., DNA and interior of the solid planets
move. reactions necessary for this range, liquid RNA) start to break apart. and moons may be in this
life. It can also cause water can still exist Also, high temperatures temperature range.
the freezing of water, under certain cause the quick
making liquid water conditions. evaporation of water.
unavailable.
Atmosphere Small planets and Earth and Venus are Venus’s atmosphere is Of the solid planets and
moons have the right size to hold 100 times thicker than moons, only Earth, Venus,
insufficient gravity to a sufficient Earth’s. It is made almost and Titan have significant
hold an atmosphere. atmosphere. Earth’s entirely of greenhouse atmospheres. Mars’
The gas molecules atmosphere is about gasses, making the atmosphere is about 1/100th
escape to space, 100 miles thick. It surface too hot for life. that of Earth’s, too small for
leaving the planet or keeps the surface The four giant planets are significant insulation or
moon without an warm and protects it completely made of gas. shielding.
insulating blanket or a from radiation and
protective shield. small- to medium-
sized meteorites.
Energy When there is too little With a steady input Light energy is a problem Surface: The inner planets
sunlight or too few of of either light or if it makes a planet too get too much sunlight for life.
the chemicals that chemical energy, hot or if there are too The outer planets get too
provide energy to cells, cells can run the many harmful rays, such little.
such as iron or sulfur, chemical reactions as ultraviolet. Too many
organisms die. necessary for life. energy-rich chemicals is Sub-surface: Most solid
not a problem planets and moons have
energy-rich chemicals.
Nutrients used to Without chemicals to All solid planets and Too many nutrients are not a Surface: Earth has a water cycle,
build and make proteins and moons have the same problem. However, too active an atmosphere, and volcanoes to
maintain an carbohydrates, organisms general chemical a circulation system, such as circulate nutrients. Venus, Titan,
organism’s body. cannot grow. Planets makeup, so nutrients the constant volcanism on Io, and Mars have nutrients and
without systems to deliver are present. Those with Jupiter’s moon, Io, or the ways to circulate them to
nutrients to its organisms a water cycle or volcanic churning atmospheres of the organisms.
(e.g., a water cycle or activity can transport gas planets, interferes with an
volcanic activity) cannot and replenish the organism’s ability to get Sub-surface: Any planet or moon
support life. Also, when chemicals required by enough nutrients. with sub-surface water or molten
nutrients are spread so living organisms. rock can circulate and replenish
thin that they are hard to nutrients for organisms
obtain, such as on a gas
planet, life cannot exist.
5
What is It
Earth is the only place in the known universe confirmed to host life and is the only
one known for sure to have liquid water in the surface. These are reasons why
planet earth is a unique one: (1) It has liquid water; (2) Plate Tectonics; and (3) It
has atmosphere that shelters it from the worst of the sun’s rays.
Earth is the only planet in the solar system that has a large amount of liquid water.
About 70% of the surface of the Earth is covered by liquid or frozen water. Because
of this, Earth is sometimes called “blue planet.” Planet Earth is habitable because it
has the right distance from the sun. It is kept warm by an insulating atmosphere,
and it has the right chemical ingredients for life including water and carbon. It can
provide water, oxygen, useful biological products for human, and has suitable
weather and climate.
Earth, Venus, and Mars may have similarities: (1) They all are terrestrial planets,
made of solid rocks and silicates; (2) They all have an atmosphere; (3) They all
almost have the same time to rotate on their axes; (4) Earth and Mars both have
water; (5) They all have carbon dioxide; and (6 All have landforms. Earth, Venus,
and Mars have differences: (1) Venus has no water; (2) Venus and Mars don’t have
oxygen; and (3) Earth has life forms.
What’s More
Activity 1.1 Understanding Planet Earth
Compare and Contrast
How is planet Earth similar and different from Venus and Mars? Provide possible
explanations for your observations using the information in the table.
VENUS EARTH MARS
Mass (1024kg) 4.87 5.97 0.642
Diameter (km) 12,104 12,756 6792
Density (kg/m3) 5243 5514 3933
Gravity (m/s2) 8.9 9.8 3.7
Escape Velocity (km/s) 10.4 11.2 5
Surface pressure (bars) 92 1 0.01
Composition of atmosphere 96% CO2, 3.5% N 77%N, 21% O2, 1%Ar 95%CO2, 2.7%N, 1.6%Ar
Major Greenhouse Gases(GHG) CO2 CO2 H2O CO2
Mean Temperature (0C) 464 15 -65
Temperature if no greenhouse gases are -46 -18 -57
present
Changes in Temperature (0C) due to +523 +33 +10
greenhouse gases
Distance from the Sun (106km) 108.2 149.6 227.9
Orbital Period (days) 224.7 365.2 687
Orbital Velocity (km/s) 35 29.8 24.1
Length of day (hours) 2802 24 24.7
Global Magnetic Field No Yes No
Comparison of the features of Venus, Earth, and Mars
(National Aeronautics and Space Administration, 2015)
6
What I Have Learned
Assessment
Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. What makes planet earth different from the other planets in the solar system?
A. It supports life. C. The atmosphere holds gases.
B. It is mostly covered in water. D. All of the above
2. Planet Earth is uniquely different from other planets because __________.
A. It has people that live in it.
B. It has soil where trees grow.
C. It has trees that provide oxygen.
D. It has liquid water in the surface.
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3. What makes planet Earth habitable?
A. It has comfortable distance from the sun.
B. The atmosphere serves as shields from the sun.
C. Only A
D. Both A and B
4. Why is Earth called the “living planet?”
A. It has life mechanism.
B. It has water and atmosphere.
C. It has carbon dioxide in the atmosphere.
D. It has atmosphere that supports oxygen.
5. Which must be provided for an organism to survive in planet Earth?
A. right amount of sunlight and atmosphere
B. right amount of water and carbon
C. Only A
D. Both A and B
6. Planet Earth is considered as “blue planet.” Which of the following best
describes the surface of planet Earth?
A. Earth has atmosphere.
B. Earth has lots of volcano.
C. Earth is covered with red dust.
D. Earth has mostly water on the surface.
7. What is the reason why Earth is different from other planets in the solar
system?
A. Earth is mostly covered in water.
B. Earth has comfortable distance from the sun.
C. Earth has carbon dioxide on its atmosphere.
D. It has approximately same size as that of Venus.
8. Which of the following best describes planet Earth?
A. It has gases. C. It has rocky core.
B. It supports life. D. It supports other planet.
9. It was found out that Earth’s surface is covered with water. Approximately,
how many percent of water comprises the Earth?
A. 45% water C. 60% water
B. 50% water D. 70% water
10. Earth can support the survival of organisms. What is/are the factor/s that
make/s Earth habitable?
I. atmosphere III. temperature
II. energy IV. nutrient
A. I C. I, II, III
B. I, II D. I, II, III, IV
11. In order for an organism to survive, nutrients are needed. What are the
nutrients that planet Earth can offer for an organism to exist?
A. Earth has an atmosphere and ozone layer.
B. Earth has both water cycle and nitrogen cycle.
C. Earth has natural activities to circulate nutrients.
D. All of the above
8
12. Many studies have shown similarities of Earth and Venus. What makes Earth
similar with Venus?
A. Earth and Venus have the same orbit.
B. Earth and Venus have the same diameter.
C. Earth and Venus have the same atmosphere.
D. Earth and Venus are of the right size to hold a sufficient atmosphere.
13. What makes human and other living organisms capable to live on Earth?
A. Earth can provide food for the organism.
B. Earth can protect the organism from any possible threat.
C. Earth’s temperature is mostly hot compared to other planets.
D. Earth has the right amount of temperature, water, good atmosphere,
and favorable climate.
14. Planet Earth is considered uniquely different from any other planets in the
Solar system. Which among the given choices correctly answers the
statement?
A. Earth is the only planet that changes structure.
B. Earth is the only planet that turns around in space.
C. Earth is the only planet that is mostly covered with water.
D. Earth is the only planet that is mostly made from rocks.
15. What is the reason why every living thing on Earth has the chance of survival?
A. Earth is covered with 65% water.
B. Earth thick atmosphere consisted mainly of carbon dioxide.
C. Earth has active volcanoes similar with those that are found in Venus.
D. Earth has ozone layer to protect living organisms from harmful
radiation.
Additional Activities
Creating a Planet: Fill up the data needed in your created planet.
My Planet is called _____________________. It is located in the ___________________.
The weather is _____________________It would have __________ kinds of organisms.
The individual who live there are called _________________________.
The individual look like this. The planet looks like this.
9
Week
What I Know
Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.
1. Which of the following is NOT one of the four subsystems of the Earth?
A. biosphere C. water sphere
B. hydrosphere D. geosphere
2. All of the waters, including subsurface and atmospheric water comprise the
Earth. Which geological subsystem best label the statement?
A. the geosphere C. the biosphere
B. the hydrosphere D. the atmosphere
3. Earth contains all living organisms including those on the land, in the
water and air. Which subsystem best describes the statement?
A. biosphere C. atmosphere
B. hydrosphere D. geosphere
4. Which subsystem suits the statement, “All living things, including humans,
are part of the immense Earth”?
A. biosphere C. hydrosphere
B. geosphere D. atmosphere
5. What subsystem will network with biosphere for photosynthesis to take
place?
A. atmosphere C. hydrosphere
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B. geosphere D. biosphere
6. Oxygen, water vapor, nitrogen, and other gases help organism to survive .
Which Earth sphere contain these materials?
A. biosphere C. hydrosphere
B. atmosphere D. geosphere
7. Which term is used to describe the thin layer of solid rock that makes up
the outermost part of the Earth?
A. core C. mantle
B. crust D. biosphere
8. Among the subsystems, which is composed of a mixture of gases that
surrounds the Earth?
A. nitrogen C. biosphere
B. atmosphere D. kingdoms
9. The atmosphere of the Earth is composed of ___ nitrogen and _____ oxygen
and other gases.
A. 0% and 100% C. 78% and 21%
B. 21% and 78% D. 505 and 505
10. In what subsystem of the Earth are the rocks and mineral found?
A. atmosphere C. hydrosphere
B. biosphere D. geosphere
11. What part of the Earth’s sphere make up hydrosphere?
A. glaciers C. seawater and inland water
B. groundwater D. all of the above
12. Among all the gases, which gas composed the Earth’s atmosphere?
A. CO2 C. N2
B. He D. O2
13. Ozone plays an important part for organisms to stay alive. To what sphere
does ozone belong?
A. atmosphere C. geosphere
B. biosphere D. hydrosphere
14. Which answer best describes the role of the ozone layer?
A. It traps heat from the sun to heat the planet.
B. It protects the plants and animals on earth from receiving too much
ultraviolet radiation.
C. It cools the earth through the evaporation of water vapor
D. It keeps the oxygen in the atmosphere closest to Earth and the
nitrogen separated in the atmosphere.
15. Which of the following is an example of a human impact of the biosphere?
A. littering C. water pollution
B. air pollution D. littering, air and water pollution
14
Lesson 1 Origin and Structure of the Earth –
The Subsystem
Earth is sometimes called the “water planet” or the “blue planet” because seas cover
more than two-thirds of its surface. Earth is the only planet or moon in the solar
system with rain that falls from clouds, runs over the land, and collects in extensive
oceans. It is also the only body we know that supports life. This self- learning
module will help you understand the subsystem of the planet where you stand right
now.
What’s In
Read the statement below and answer the question that follows.
Imagine walking along a rocky coast as a storm blows in from the sea. The wind
whips the ocean into whitecaps, and waves crash onto the shore. Before you have
time to escape, blowing spray has soaked your clothes. A hard rain begins as you
scrambled over the rocks to your car. During the adventure, you have observed the
spheres of the Earth.
List down the terms that are used in the statement that reflects to what made up
the Earth. Categorized them based on the following:
15
What’s New
What is It
Subsystems of the Earth
Geosphere
16
What I Have Learned
2. Biosphere – the zone of Earth where all forms of life exist: in the sea, on land,
and in water. It is sometimes called as the large ecosystem. This is the zone that
life inhabits. Biosphere is a very thin layer of the earth’s surface.
3. Geosphere – the solid Earth, consisting of the entire planet from the center of
the core to the outer crust. It includes the core, mantle, and crust of the Earth.
4. Hydrosphere – the water part of the Earth which circulates among oceans,
continents, glaciers, and atmosphere. Oceans cover 71% of the Earth and
contain 97.5% of its water.
Earth is a complex system made up of many smaller systems through which matter
and energy are continuously cycled. Energy and matter flow through Earth’s
spheres: geosphere, hydrosphere, atmosphere, and biosphere. Energy flows
through the atmosphere mostly by convection. How does matter and energy flow
across the four subsystems of the Earth? The Earth consists of four subsystems,
across whose boundaries matter and energy flows, the atmosphere (air), biosphere
(living things), hydrosphere (water), and geosphere (land). The atmosphere provides
the geosphere with heat and energy needed for rock breakdown and erosion. The
biosphere receives gases, heat, and sunlight (energy) from the atmosphere. It
receives water from the hydrosphere and a living medium from the geosphere.
What I Can Do
The human population has increased rapidly since the 1700’s. For most of human
history, there were fewer than half-billion people on Earth. In mid- 2009, 6.7 billion
people inhabited our planet. Because of these, extensive pollution is everywhere. As
a student, what can you do to save not only a particular system, but the Earth
itself? Write your answer in the table.
17
Assessment
2.
3.
4.
5.
Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. Earth includes beach grasses, forms of life in the sea, on land, and even in
the air. Which term best describes the statement?
A. atmosphere C. geosphere
B. biosphere D. hydrosphere
3. Life is supported by oxygen and carbon dioxide. Which subsystem will best
describe the statement?
A. atmosphere C. geosphere
B. biosphere D. hydrosphere
5. All of earth’s cycles and spheres are interconnected. Why is this so?
A. because they are interconnected
B. because Earth is where we live in
C. because Earth is the only living planet
D. because every organism has its own function in the Earth
6. What is an example of a connection between atmosphere and geosphere?
A. water C. mountains
B. nitrogen D. volcanic eruption release gas
18
7. An example of a connection between atmosphere and hydrosphere is ______.
A. lakes C. rivers
B. rain D. rocks
10. All living things, including land and sea made up the Earth. Which term best
described the statement?
A. geosphere C. atmosphere
B. ozone layer D. biosphere
11. Which interaction will take place if nitrogen is returned to the soil when dead
plants decompose?
A. biosphere and atmosphere C. biosphere and geosphere
B. geosphere and atmosphere D. atmosphere and geosphere
12. Which interaction best describes carbon dioxide dissolving from the air into
the ocean?
A. atmosphere and hydrosphere C. atmosphere and geosphere
B. atmosphere and atmosphere D. atmosphere and biosphere
13. The atmosphere of the Earth is composed of ___ oxygen and _____ nitrogen
and other gases.
A. 0% and 100% C. 78% and 21%
B. 21% and 78% D. 50% and 50%
14. What part of geosphere is a thin layer of solid rock that makes up the
outermost part of the Earth?
A. core C. mantle
B. crust D. biosphere
19
Additional Activities
“Connect Me Spheres”
Procedure: Analyze the interactions of the spheres after the onslaught of Taal
Volcano.
Geo
20
References
Earth’s Four Subsystems, Seattle Pi, accessed May 29, 2020,
https://education.seattlepi.com/earth-four-subsystems-work-together-
4634.html
Thompson, Graham R. et al. 2012. Introduction to Earth Science. Pasig City: Cengage
Learning Asia.
22
Week
What I Know
Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.
1. Pyrite is a yellowish mineral that looks like gold and is commonly called
fool’s gold. What is the property of mineral exhibited by pyrite wherein it
reflects light and with metallic look?
A. Color C. Luster
B. Hardness D. Streak
2. Quartz can break other than along planes of cleavage. What is the property
of mineral that show this characteristic?
A. Cleavage C. Hardness
B. Fracture D. Tenacity
3. Some minerals like mica has surfaces with planes of weak bonds in the
crystals. Thus, its crystals can be peeled like layers of onion. Which is the
property exhibited by mica?
A. Cleavage C. Hardness
B. Fracture D. Tenacity
24
B. Fracture D. Luster
3. What are the building blocks of rocks and it is mostly found in the
geosphere?
A. minerals C. ore
B. soil D. elements
10. During the 1800’s, miners can identify real gold from pyrite through biting
the surface of the mineral. If a bite mark is exhibited, then the said mineral
is considered real gold. What property is tested in this scenario?
A. cleavage C. hardness
B. luster D. streak color
11. What is a carbonate mineral that occurs in a different crystal form and is
less common than either calcite or dolomite?
A. aragonite C. calcite
B. gypsum D. silica
12. What constitutes the size, shape, and arrangement of mineral grains in a
rock?
A. permeable origin C. cement
B. porosity D. texture
14. What do you call to the tendency for a mineral to break along flat surfaces?
A. cleavage C. ductility
B. hardness D. tenacity
25
15. What is the solid form of a mineral produced by a repeating pattern of
atoms?
A. crystal C. element
B. density D. fracture
Lesson 1 Minerals
Minerals make up the rocks beneath your feet, the soil that supports plants, and
the deep rock of Earth’s mantle. Any thorough study of Earth must include an
understanding of minerals. But it is not sufficient to study minerals isolated from
the rest of the planet. Rather we can learn more by observing the ways that
minerals interact with other Earth systems.
What’s In
This module contains activities that will enhance the teaching -learning process
among learners about the minerals. It deals with the characteristics of minerals and
the properties exhibited by the minerals. As the learners answer the questions they
will be able to explore and understand the concepts about minerals. Moreover, they
will develop awareness on the importance of minerals.
What’s New
Name the following pictures below. List down the usage of these object in our daily
activities. What do the objects presented below imply?
1.
2.
26
3.
4.
5.
We are using these products made from minerals daily. Graphite is the mineral used
in wooden pencil. Halite is the mineral found in salt. Your cellphone is made up of
different minerals. The cars that we drive, the roads that we travel, the building that
we live in, are some examples of products derived from minerals.
Characteristics of Minerals
Arrange the jumbled letters to find the appropriate criteria to determine whether a
material is classified as a mineral or not.
1. N L T L A U R Y N G O I R U C C
2. C A I I R O G N
3. S O U E N E G O M O H D I L O S
4. E N I L L A T S Y R C E S R T R U C U T
27
5. L M C E H A I NOITOCMOPSI
What is It
Characteristics of Minerals
1. naturally occurring- a product of Earth’s natural processes
2. inorganic- it must be product of Earth’s physical processes.
3. homogeneous solid- minerals should have definite volume and rigid shape
4. definite chemical composition—represented by a chemical formula
5. orderly crystalline structure- atoms of minerals are arranged in an
orderly and repeating pattern
Properties of Minerals
To identify minerals, mineralogists observe the following properties:
a. Color - mineral’s color may change depending on the surface.
b. Streak - color of mineral in powdered form.
c. Hardness - minerals resistance to scratching
28
Malleability a mineral can be flattened by pounding with a hammer.
Ductility- A mineral can be stretched into wire.
Flexible but inelastic-Minerals are bent but they remain in the new
position.
Flexible and elastic- Minerals are bent, and they bring back to their
original position.
Sectility- ability of minerals to be sliced by a knife.
Prepare a list of minerals based on the Mohs Scale of Hardness and identify some
products that make use of these minerals.
1. Diamond
2.Corundum
3.Topaz
4.Quartz
5.Orthoclase
6 Apatite
7.Fluorite
8.Calcite
9. Gypsum
10. Talc
29
What’s More
Identify other properties exhibited by the minerals. Choose your answer from the
given choices.
30
5. A mineral can be turned into powder________________________________
Identify the prominent properties exhibited by the following minerals. Fill in the
blanks to form the appropriate term that best fits the described mineral property.
31
4. __ R __ C __U __ __- the manner breaks other than along planes of
cleavage.
STREAK LUSTER
Matching Type
32
What I Can Do
List some of the uses of minerals around us.
Minerals Uses
1.Halite Mineral found in table salt;as
preservatives
2
3
4
Reflect Upon
Upon knowing the value of minerals in our everyday life, as a student how can you
help in conserving and preserving the natural sources of these minerals? (For
example, graphite is a mineral found in pencil).
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33
Assessment
Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. Pyrite is a yellowish mineral that looks like gold and is commonly called
fool’s gold. What is the property of mineral exhibited by pyrite wherein it
reflects light and with metallic look?
A. Color C. Luster
B. Hardness D. Streak
2. Quartz can break other than along planes of cleavage. What is the property
of mineral that show this characteristic?
A. Cleavage C. Hardness
B. Fracture D. Tenacity
3. Some minerals like mica has surfaces with planes of weak bonds in the
crystals. Thus, its crystals can be peeled like layers of onion. What is the
property exhibited by mica?
A. Cleavage C. Hardness
B. Fracture D. Tenacity
5.What are the building blocks of rocks and it is mostly found in the
geosphere?
A. minerals C. ore
B. soil D. elements
6.In its powdered form, the mineral hematite is reddish. Which mineral
property is best described?
A. color C. Streak
B. luster D. hardness
34
9. What is a naturally occurring, inorganic solid that has a definite crystalline
structure and chemical composition?
A. compound C. mineral
B. crystal D. rocks
10. During the 1800’s, miners can identify real gold from pyrite through biting
the surface of the mineral. If a bite mark is exhibited, then the said mineral
is considered real gold. What property is tested in this scenario?
A. cleavage C. hardness
B. luster D. streak color
11. What is a carbonate mineral that occurs in a different crystal form and is
less common than either calcite or dolomite?
A. aragonite C. calcite
B. gypsum D. silica
12. What constitutes the size, shape and arrangement of mineral grains in a
rock?
A. permeable origin C. cement
B. porosity D. texture
14. What do you call tendency for a mineral to break along flat surfaces?
A. cleavage C. ductility
B. hardness D. tenacity
35
Additional Activities
Putting together
Directions: Complete the concept map below.
PROPERTIES MINERALS
2. Resistance to scratching
Brainstorming
Assume you are a mineralogist that discovered a new type of mineral. To inform not
only the academe but also the common people, you are then tasked to make an
infographic that will state its characteristics, properties, and significance (whether
economic, health and scientific). Present these important data through a concept
map.
36
Finding the Perfect Match
Take at least 5 photos of minerals that are found in our day to day living. Identify
the said minerals and state their unique characteristics and significance.
37
Name: _______________________________ Name: ____________________________
38
Week
What I Know
Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.
1. Rocks vary in color, size, texture and shape. They are classified based
on how they were formed. Which of the following deals with the study of
rocks?
A. Biology B. Geology C. Paleontology D. Petrology
2. Halite is made when a body of seawater becomes closed off and evaporates
and salt precipitates out and is deposited as crystallized halite. What type of
sedimentary rock is formed?
A. Clastic B. Chemical C. Organic D. Pyroclastic
3. Igneous rock is divided into two groups, extrusive and intrusive Extrusive
igneous rocks form when magma makes its way to its surface as lava and the
cools forming rocks. Which will be the characteristics of the crystals?
A. Crystals are coarse grained.
B. Crystals are fine grained.
C. Crystals are very large.
D. Crystals are phaneritic
43
5. Igneous and metamorphic rock can be buried and undergo tremendous
heating and stress. What is the process of transformation of one rock type
into another?
A. Compaction B. Lithification C. Metamorphism D. weathering
6. What type of rocks are formed from sediments over long period of time?
A. Igneous Rocks C. Metamorphic Rocks
B. Sedimentary Rocks D. Minerals
7. This refers to type of rock that was heated and compressed over time.
A. Igneous C. Metamorphic
B. Sedimentary D. All are correct
8. What is the natural process that causes one kind of rock to change into another
kind?
A. weathering B. rock cycle C. Sediments D. Metamorphism
9. A rock that forms when magma hardens beneath Earth’s surface is termed as:
A. Intrusive metamorphic rock
B. Extrusive sedimentary rock
C. Intrusive igneous rock
D. Extrusive igneous rock
11. Which of the following represents the correct order of the processes
responsible for the formation of sedimentary rocks?
A. Erosion, weathering, compaction, cementation, deposition
B. Compaction, cementation, deposition, weathering, erosion
C. Deposition, cementation, compaction, erosion, weathering
D. Weathering, erosion, deposition, compaction, cementation
12. A student obtained a cup of quartz sand from a beach. A saltwater solution is
poured into the sand and allowed to evaporate. The mineral residue from salt
water solution cements the sand grains together, forming a material that is
most likely an:
A. extrusive igneous rock
B. intrusive igneous rock
C. metamorphic rock
D. sedimentary rock
44
13. Which of the following is true about rocks?
A. Rocks are composed of only one mineral.
B. Most rocks are a mixture of minerals.
C. Rocks do not contain minerals.
D. Coal is not considered a rock.
14. What is the type of rock formed from lava that cools quickly that results to
finer grain and smaller size of crystals?
A. Extrusive igneous rock
B Intrusive igneous rock
C. Sedimentary rock
D. Metamorphic rock
Lesson 2 Rocks
What’s In
This module contains activities that will enhance the teaching-learning process
among learners about the minerals. It deals with the characteristics of rocks and the
properties exhibited by the rock. As the learner answers the questions, they will able
to classify and understand the concepts about three types of rocks. They will
understand the process of their formation. Moreover, they will develop awareness on
the importance of rocks to our daily life.
45
What’s New
Word Cryptogram
Directions: To come up with the correct answer for each number, unscramble the
letters by placing the correct letter sequence in the shaded box. Use number boxes
to complete the answer to the riddle below.
E M N I S T D A Y E R
E M A I H T P C M E R
G E N O S U C O R I K
V A C N I O L
C A S I L T C
1 5
1 2 3 4 5 6
Riddle: the layers of sediments that accumulated and carry the records of the Earth’s
history.
46
What is It
Earth is a solid rock to a depth of 2,900 kilometers, where mantle meets the liquid
outer core. A rock is a naturally occurring solid aggregate of one or more minerals.
The aggregate minerals forming the rocks are held together by chemical bonds.
Grains can be different in color, texture, and sizes. Geologists then group rocks into
three categories based on how the rocks form: igneous sedimentary and
metamorphic rock. Petrology is the scientific study of rocks. Petrologists classify
rocks based on how they were formed.
47
Metamorphic - forms from pre-existing rocks: either metamorphic, igneous,
sedimentary
Classification:
a. Texture - refers to the size arrangement ad grains within the rock.
b. Foliation - any planar arrangement of mineral grains or structural features
within the rock.
*foliated - appeared banded or layered, contains crystals Example: mica
Non-foliated - made up of only few minerals
Sedimentary rocks provide information about surface conditions that existed in the
Earth’s past.
Particles of sand, shells, pebbles, and other fragments of materials called
sediments, accumulate in layers and over long period of time harden into rocks.
Compaction-due to increase of pressure of layered sediments it bind together to
form the sedimentary rocks.
48
Example: Halite - formed when a body of seawater becomes closed off and
evaporates.
c. Organic - rocks formed from the accumulation of animal debris
Example: Coal - composed of organic matter in the form of plants fragments.
Identify and classify the types of rocks below as to igneous, sedimentary, and
metamorphic rock.
1. ___________________ 2. ___________________
3. ___________________ 4. ___________________
5. ___________________
Collect at least five rock samples in your place and take a photo of the samples.
Describe the characteristics of each rock depending on their appearance, texture,
49
color, and layers (or bands). Then classify them as to igneous, sedimentary, or
metamorphic rock.
Description: ___________________________________________
Importance: ___________________________________________
Description: ___________________________________________
Importance: ___________________________________________
Description: ___________________________________________
Importance: ___________________________________________
Description: ___________________________________________
Importance: ___________________________________________
Description: ___________________________________________
Importance: ___________________________________________
50
What’s More
10O
9P
1C 7 C
A
2C
E
8C
M
I
4
5P
ACROSS
1.rocks formed from accumulation of clasts little pieces
2. formation of igneous rocks due to hardening of magma
3. transformation of one rock type into another
4. combined aggregation of minerals
5. composed of ejected fragments
6. a.k.a. volcanic rock
7. fine grained rock
DOWNWARD
8. sediments bind together due to increase in pressure
9. coarse grained
10. sedimentary rocks formed from plants and animals.
51
What I Have Learned
Fill in the table below by providing basic information about the types of rocks. You
may refer to the words in the box below.
Types
Examples
Process of
formation
WORD LISTS
Lithification pumice clastic
52
What I Can Do
Reflect upon:
Rocks are all around us. It is used for building materials, cars, roads, and
appliances. As a senior high school student, how can you promote the
sustainable development in utilizing these resources? Give some suggestions.
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Using the Internet, research three rocks of different types (igneous, sedimentary,
and metamorphic) and state their respective economic and medical significance
in our present society.
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53
Assessment
Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. Petrologist classifies rocks based on how they were formed. What is the
branch that deals with the study of rocks?
A. Biology B. Geology C. Paleontology D. Petrology
3. Igneous rock is divided into two groups, extrusive and intrusive Extrusive
igneous rocks form when magma makes its way to its surface as lava and
the cools forming rocks. Which of the following will be the characteristics of
the crystals?
A. Crystals are coarse grained.
B. Crystals are fine grained.
C. Crystals are very large.
D. Crystals are phaneritic
6. What type of rocks are formed from sediments over long period of time?
A. Igneous Rocks C. Metamorphic Rocks
B. Sedimentary Rocks D. Minerals
7. This refers to a type of rock that was heated and compressed over time.
Which best fits the description?
A. Igneous B. Metamorphic C Sedimentary D. All are correct
8. What is the natural process that causes one kind of rock to change into
another kind?
A. weathering B. rock cycle C. Sediments D. Metamorphism
54
9. A rock that forms when magma hardens beneath Earth’s surface is called an:
A. Intrusive metamorphic rock
B. Extrusive sedimentary rock
C. Intrusive igneous rock
D. Extrusive igneous rock
11. Which of the following represents the correct order of the processes responsible
for the formation of sedimentary rocks?
A. Erosion, weathering, compaction, cementation, deposition
B. Compaction, cementation, deposition, weathering, erosion
C. Deposition, cementation, compaction, erosion, weathering
D. Weathering, erosion, deposition, compaction, cementation
12. A student obtain a cup of quartz sand from a beach. A saltwater solution is
poured into the sand and allowed to evaporate. The mineral residue from salt
water solution cements the sand grains together, forming a material that is
most likely an:
A. Extrusive igneous rock C. sedimentary rock
B. intrusive igneous rock D. metamorphic rock
14. What is the type of rock formed from lava that cools quickly that results to finer
grain and smaller size of crystals?
A. Extrusive igneous rock
B Intrusive igneous rock
C. Sedimentary rock
D. Metamorphic rock
55
Additional Activities
A. Complete the concept map using the words below.
56
Additional Activities
B. Fill in the missing word/term to complete the rock cycle. You may refer to the
box below.
ROCK CYCLE
3.
Weathering,
erosion,
4.
transport and
deposition
2. 5.
1. Burial and
extreme heat
MAGMA
57
Week
2. Some minerals dissolve rapidly in water while others do not. If you put crystals
of halite or rock salt in water, the crystals rapidly dissolve to form a solution.
What is the type of chemical weathering exhibited by the mineral halite?
A. abrasion
B. oxidation
C. dissolution
D. hydrolysis
3. Stalactites and stalagmites on caves are a popular attraction. These were formed
through deposition of calcium carbonate and other minerals. What type of
weathering occurred during the process?
A. freezing and thawing
B. chemical weathering
C. mechanical weathering
D. thermal and pressure change
62
4. Water reacts with one mineral to form a new mineral that has water part of
crystal structure. A mineral feldspar, the most abundant on the Earth’s crust
weathers by the process of chemical weathering. What is the process that is
exhibited by the feldspar?
A. oxidation
B. hydrolysis
C. dissolution
D. pressure-release fracturing
6. Rocks and sand collide with one another when currents or waves carry them
along a stream or beach. During these collisions, their sharp edges and corners
wear away and the particles become rounded. What is the mechanical
weathering of rocks by friction and impact?
A. abrasion
B. oxidation
C. hydrolysis
D. dissolution
7. Which of the following human activities result in moving the sediments from one
place to another?
A. cultivating soil and gardening
B. developing new athletic field
C. building a highway
D. all of the above
9. All of the following are the advantages of wind barrier such as row of trees along
the edge of field EXCEPT:
A. conserve moisture
B. trap the blowing wind
C. protect crops from the effects of wind
D. increase the effects of wind erosion.
10. The process by which rocks on the earth’s surface breaks down or changes its
composition is called _____________.
A. erosion C. weathering
B. deposition D. mass wasting
63
11. Which of the following processes does NOT cause physical weathering?
A. oxidation
B. freezing and thawing
C. burrowing of animals
D. temperature and pressure
12. Which of the following processes does NOT cause chemical weathering?
A. oxidation C. dissolution
B. hydrolysis D. temperature
13. Which of the following processes of chemical weathering occur in the formation
of stalactites and stalagmites?
A. oxidation
B. hydrolysis
C. dissolution
D. all of the above
15. Soil is an essential component of the earth’s crust. What is the composition of
the soil?
A. a mixture of clay, dust, and sand
B. a mixture of silt, dust, sand, and water
C. a mixture of rock, dust, sand, water, and gas
D. a mixture of grains, organic matter, H2O, and gas
The earth’s surface is composed of water and landmasses. The solid portion is made
out of rocks and minerals that could experience changes either physically or
chemically. The weathered materials are transported by different agents from one
place to another and will settle down in a particular area. These progressions that
happen is achieved by forms called exogenic processes. It includes weathering,
erosion, and deposition.
64
What’s In
Activity 1
Organize the disordered letters. Describe each term briefly.
S K O R C
E I G N O S U
E I M N D S E T S
N A I O T G D I S I N T E R
P O I C M O N I O T S D E
What’s New
Activity 2
Weathering is the process of disintegration (physical) and decomposition (chemical)
of rocks. Weathering is a process of breaking down rocks into small particles such
as sand, clay, gravel and other fragments. There are two types of weathering:
mechanical weathering and chemical weathering. This activity will allow learners to
differentiate physical changes from chemical changes.
Learners will follow the following instructions:
1. Prepare the needed materials: two pieces of paper and match.
2. Tear one paper, observe, and record your answer.
3. Burn the other paper (with teacher supervision), observe, and record your
answer.
4. Based on your observation, differentiate the changes after tearing and
burning.
65
Tearing of paper Burning of paper
Before Before
After After
Activity 3
Spot the difference/s.
What can you say about the image? Do you see any difference?
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_
What is It
Mechanical weathering or physical weathering is the breakdown of rocks into pieces
without any change in its composition. In this process, the size and shape of rocks
changes and this occurs because of the following factors shown in the table below.
Factors Description
Due to tectonic forces, granite may rise to form mountain range.
Pressure After the granite ascends and cools, the overlying rocks and
sediments may erode. At the point when the pressure diminishes,
the rock expands, cools, and became brittle and fractured.
Rocks expand and are fractured when expose to high temperature.
Temperature However, if the temperature drops to 0°C (freezing point of water),
it also expands and causes fracture.
66
Frost Generally, rocks have fracture in its surface and when water
Wedging accumulates in the crack and at that point freezes, the ice expands
and breaks the rock apart.
The breakdown of rocks is caused by impact and friction. This
Abrasion primarily occurs during collision of rocks, sand, and silt due to
current or waves along a stream or seashore causing sharp edges
and corners to wear off and become rounded.
Organic The roots grow causing penetration into the crack, expand, and in
Activity the long run, break the rock.
Human Activities such as digging, quarrying, denuding forests and
Activities cultivating land contribute to physical weathering.
Burrowing Animals like rats, rabbits and squirrels excavate into the ground
Animals to create a space for habitation.
Activity 4
1. ____________________________________
2. ____________________________________
3. ____________________________________
In chemical weathering, there are changes in the composition of rocks due to the
chemical reactions presented below.
67
Chemical Description
Reactions
It occurs in specific minerals which are dissolved in water.
Dissolution Examples of these minerals are Halite (NaCl) and Calcite (CaCO 3).
The formation of stalactites and stalagmites in caves are brought
about by this chemical reaction.
II. Analyze each picture. Identify the chemical reaction that causes chemical
weathering.
4. ____________________________________
5. ____________________________________
What’s More
Weathering is an important process in the formation of soil. Soil is a mixture of
grains, organic matter, H2O, and gas.
Plants, animals, and humans play an important role in the erosional process.
Erosion is the separation and removal of weathered rocks due to different agents
like water, wind, and glacier that causes transportation of the material to where
they are deposited.
Activity 5
Answer the following questions:
68
2. How do human activities affect the rate of erosion?
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Activity 6
Illustrate the agents of erosion and explain how each of them causes erosion.
The movement of sediments downslope under the influence of gravity is called mass
wasting. The example of this are fall, slide, avalanche, and flow. On the other hand,
deposition is the process in which the weathered materials carried out by erosion
settle down in a particular location.
Activity 7
Define the type of mass movement.
1. Fall
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2. Slide
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3. Flow
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4. Spread
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5. Topple
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Activity 8
Crossword puzzle: Identify the terms being described across and down that refer
to the agents of exogenic processes.
1 7 8
10
ACROSS
1. It refers to the aggregation or accumulation of weathered sediments to create
different landforms.
2. It is associated with many agents because it pulls the materials downslope.
70
3. It is a major erosional agent on areas on Earth’s surface that experience both
limited precipitation and high temperature.
4. It is one of the components of lithosphere.
5. It has the power to move large particles of weathered material than wind does.
6. It has the capacity to carry huge rocks and piles of debris over great distances.
DOWNWARD
7. It is the process that transports Earth’s materials from one place to another.
8. It is the process wherein materials are carried away.
9. It refers to the downslope movement of weathered materials along a well-
defined surface.
10. It refers to the movement of saturated materials downslope like liquid.
71
Water Organic Activity Chemical Frost wedging
Hydrolysis Deposition Wind Exogenic
Process
Burrowing Dissolution Abrasion Pressure
Physical Weathering Erosion Oxidation
Glacier Human Activities Temperature
Activity 10
Fill in the blanks with the correct answer.
What I Can Do
Activity 11
Soil is an essential component of the earth’s crust. It enabled life to exist and
provides the services necessary for human survival. What is the effect of soil
erosion? What will you do to protect the community?
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Assessment
Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
2. The rocks are fractured, cracked, and broken down into small pieces. What is
the type of weathering?
A. oxidation
B. pressure change
C. physical weathering
D. chemical weathering
6. The removal and transport of weathered material from one place to another is
called __________.
A. erosion
B. deposition
C. weathering
D. sublimation
73
7. Which of the following is not an agent of erosion?
A. wind
B. water
C. rocks
D. glacier
9. What is the term that refers to the process wherein rocks break down into
pieces?
A. erosion
B. deposition
C. weathering
D. mass wasting
10. Water reacts with one mineral to form a new mineral. Feldspar when weathered
forms clay. What process of chemical weathering is involved?
A. oxidation
B. hydrolysis
C. dissolution
D. all of the above
11. The repeated thawing and freezing of water in the cracks of rocks is known as
A. solution
B. abrasion
C. oxidation
D. frost wedging
12. Which of the following does NOT cause chemical changes in the composition of
rocks?
A. abrasion
B. oxidation
C. dissolution
D. hydrolysis
74
14. The following are exogenic processes occurring on the earth surface EXCEPT:
A. erosion
B. eruption
C. deposition
D. weathering
15. Which of the following is the process by which sediments settle down in a
particular area?
A. transport
B. deposition
C. weathering
D. deformation
Additional Activities
Draw and explain how the products of weathering are carried away by erosion and
deposited elsewhere.
Explanation:
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75
Week
What I Know
Directions. Read each question and choose the correct answer. Write your answer
on a separate sheet of paper.
1. Why does radioactive decay play a very important role in earth’s internal
heat?
a. Radioactive element can be found anywhere in the planet.
b. When radioactive element decays, it produces heat.
c. Spontaneous nuclear disintegration of radioactive elements
produced thermal energy.
d. All of the above
2. How does the conduction in the surface of the earth affect the temperature
of our atmosphere?
a. Air molecules come in contact with the warmer surface of the land
and ocean resulting to the increase of its thermal energy.
b. Air molecules come in contact with the cooler surface of the land and
ocean resulting to the decrease of its thermal energy.
c. Air molecules does not come in contact with the warmer surface of
the land and ocean resulting to the increase of its thermal energy.
d. Air molecules do not come in contact with the cooler surface of the
land and ocean resulting to the increase of its thermal energy.
79
3. How does convection in Earth’s mantle affects the formation of landmass
like volcano and mountain?
a. Heat tries to escape in the interior of the earth.
b. Collision and separation of tectonic plates happens due to the slow
motion of convection cells.
c. When warm material in the mantle rises up to the surface (ground),
it will cool and sinks, these cooled materials will eventually be turned
into landmass.
d. All of the above
5. This refers to the heat left over from the formation of the Earth?
a. radiogenic heat
b. primordial heat
c. superheating
d. heat from the sun
8. Which of the following stores magma and located in a region just beneath
the crust all the way to the core?
a. crust
b. outer core
c. inner core
d. mantle
9. What heat transfer of fluid in the Earth’s interior results to the movement
of rocky mantle up to the surface?
a. convection current
b. conduction
c. insolation
d. radiation
80
10. Which of the following are boundaries between the three major layers
of the Earth?
a. arches
b. discontinuities
c. poles
d. plates
11. What refers to the shaking of the surface of the Earth resulting from a
sudden release of energy caused by a convection current?
a. earthquake
b. volcanic eruption
c. storm surge
d. hurricane
12. How does the mantle behave as a viscous fluid on a geological time
scale?
a. presence of high radiation
b. absence of high pressure
c. existence of high temperature
d. decrease in altitude
13. What kind of heat transfer occurs mostly on the Earth’s surface?
a. conduction
b. convection
c. insolation
d. radiation
15. What are the two factors that affect conduction on the Earth’s surface?
a. Radioactive decay and nuclear disintegration of elements.
b. Heat from the Earth's core and radiation from the Sun.
c. Movement of plates and radiation from the Earth’s core.
d. Stored magma and volcanic eruption.
81
Lesson 1 The Earth’s Internal Heat
Heat energy plays a vital role in our planet. It is one of the extreme factors in what
makes the world livable. If you think of a volcano, you know Earth must be hot inside.
The heat inside of our planet moves continents, build mountains and causes
earthquakes, but where does all this heat inside the earth come from?
Sources of heat in our planet can be identified as Primordial and Radiogenic heat.
During the early formation of the Earth, the internal heat energy that gradually
gathered together by means of dispersion in the planet during its few million years
of evolution is called Primordial heat. The major contribution of this internal heat
is the accretional energy – the energy deposited during the early formation of a planet.
The core is a storage of primordial heat that originates from times of accretion when
kinetic energy of colliding particles was transformed into thermal energy. This heat
is constantly lost to the outer silicate layers of the mantle and crust of the earth
through convection and conduction. In addition, the heat of the core takes tens of
thousands of years to reach the surface of the earth. Today, the surface of the earth
is made of a cold rigid rock since 4.5 billion years ago, the earth’s surface cools from
the outside but the core is still made of extremely hot material.
On the other hand, the thermal energy released as a result of spontaneous
nuclear disintegration is called Radiogenic Heat. It involves the disintegration of
natural radioactive elements inside the earth – like Uranium, Thorium and
Potassium. Uranium is a special kind of element because when it decays, heat
(radiogenic) is produced. Estimated at 47 terawatts (TW), the flow
of heat from Earth's interior to the surface and it comes from two main sources in
equal amounts: the radiogenic heat produced by the radioactive decay of isotopes in
the mantle and crust, and the primordial heat left over from the formation of
the Earth. Radioactive elements exist everywhere on the earth in a fairly significant
concentration. Without the process of radioactive decay, there would be fewer
volcanoes and earthquakes – and less formation of earth’s vast mountain ranges.
What’s In
82
Activity 2: Which of which?
Directions. Identify the sources of internal heat by writing RH for radiogenic heat
and PH for primordial heat. Write your answer on a separate sheet of paper.
____1. Presence of different isotopes of heat producing element in the mantle and
crust.
____2. Internal heat accumulated by dissipation of planet.
____3. Release of accretional energy.
____4. Processes involved in mantle convection.
____5. Release of thermal energy as a result of spontaneous nuclear disintegration.
What’s New
Activity 3: Find Me
Directions. Encircle the 10 words listed below. Words may appear straight across,
back-word straight across, up, and down.
MANTLE CONVECTION
CURRENT PRIMODIAL
EARTH RADIOGENIC
TECTONIC HEAT
RADIATION CONDUCTION
S M V X R S B J E R X C H K N
O Y U D H W L T L Y Q S L S Z
Q N Z E C I N E G O I D A R N
Y B A D W O P Q B Q X V Q C V
C T M H B R Y D J K R U S D E
D O U F C O N V E C T I O N A
T F N L A I D O M I R P U B R
L N K D E C Z K I X U J F D T
S X E Z U L I H C T E S I S H
P D K R E C T N E K A K G Y D
O I S H R A T N O V W I A V Z
M N D C D U H I A T O T D I K
Q V Y Z W S C L O M C G O A P
R S N E P X O M Q N F E B J R
N A K Z F A Q U J C X S T K Q
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Sources of Heat and Heat Transfer
Both sources of heat whether primordial or radiogenic undergo heat transfer and it
plays an important role to the continuous changes and development of our planet.
In connection, another part of this module describes the heat transfer in the Earth.
Three processes can transfer heat: conduction, convection, and radiation.
Conduction governs the thermal conditions in almost entire solid portions of the
Earth and plays a very important role in the lithosphere. Its processes happen in the
earth’s surface. Conduction is one of the three main ways that heat energy moves from
place to place. Technically, it can be defined as the process by which heat energy is
transmitted through collisions between neighboring atoms or molecules. Heat from
the Earth's core and radiation from the Sun is transferred to the surface of
the Earth by conduction. Contact of the atmosphere with these warm surfaces
transfers thermal energy, which then heats up the rest of the air through convection.
Radiation is the least important mode of heat transport in the Earth. The process of
heat exchange between the Sun and the Earth, through radiation, controls the
temperatures at the Earth's surface. Inside the Earth, radiation is significant only in
the hottest parts of the core and the lower mantle. When the land and water become
warm in summer, they emit long – wavelength infrared radiation that is readily
absorbed by the atmosphere. This continues during night time too. Convection in the
air then spreads out the thermal energy throughout the atmosphere.
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Activity 4: My Notepad
Directions. In your own words, how do the three (3) major processes of heat transfer
affect the temperature of the Earth? Write your answer on the space provided.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
What is It
Activity 5: Fill me up!
Directions. Use the word bank to fill in the gaps in the passage below. Write your
answers on a separate sheet of paper.
The surface layer of the earth is called the ___________________. This layer is
broken up into pieces called ___________________. These __________________ “float” on
the mantle. Heat rising and falling inside the mantle creates current called
_____________________. The ___________________ current move the __________________.
This movement is known as ___________________. The movement of the earth’s plate
causes earthquakes and ___________________.
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What’s More
Figure A. Convection
Figure B. Conduction
Figure A shows a convection cell, warm material rises (up to the surface of the earth)
and cool material sinks. These cooled materials will eventually turn to land
formation. In mantle convection, the heat source is the core. The core of the earth is
very hot. It is nearly as hot as the surface of the sun – about 6000˚C. Convection
current is relevant to the movement of tectonic plate because the heat builds up
pressure underneath the crust (tectonic plates). As they become unstable, they push
against each other (subduction) and rise upwards or one goes under the other.
Figure B shows the process of conduction on how air molecules come in contact with
the warmer surface of the land or ocean, resulting to the increase of its thermal
energy through conduction. The thermal energy of the core is transferred to the
surface of the earth and the lower levels of ocean by conduction.
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Activity 6: Picture Analysis
Directions. Read and analyze figures A and B. Answer the questions stated below.
a. Figure A shows the process of convection in the earth’s mantle. How does
it affect the formation of mountains and the temperature in the surface
(ground)?
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
c. How convection in earth’s interior and conduction in the surface affect the
temperature in our atmosphere?
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
d. How subduction cause the formation of land mass like mountains and
volcano?
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Synthesis: Based from figure A and B, how convection and conduction is inter-
related?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
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Activity 7: Crossword Puzzle
Directions. Complete the crossword by filling in the word that describes each clue.
6
1 8
Across:
Down:
88
What I Have Learned
Directions. Read each question and fill in the blanks with the correct term to
complete the statement. Write your answer on a separate sheet of paper.
3. There are three processes can transfer heat: ____________, ____________, and
radiation.
9. Air molecules come in contact with the warmer surface of the land or ocean,
resulting to the increase of its ________________.
What I Can Do
Activity 6: Illustrate and Explain
Directions. Illustrate the example indicated in the given scenario in the box where
conduction and convection are applied. Then, relate it to the processes occurring in
the Earth’s internal heat.
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CONDUCTION
Chocolate candy in your hand will eventually melt as the heat from your body is
released and makes it melted.
Explanation:
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
CONVECTION
A heater in the hot air balloon heats the air. The air inside is trapped causing the
balloon to rise.
Explanation:
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
Assessment
Directions. Read each question and choose the correct answer. Write your answers
on separate sheet of paper
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2. Why radioactive decay plays a significant role in Earth’s internal heat?
A. Radioactive element can be found anywhere in the planet.
B. When radioactive element decays, it produces heat.
C. Spontaneous nuclear disintegration of radioactive elements produced
thermal energy.
D. All of the above
4. What is produced by the radioactive decay of isotopes in the mantle and crust?
A. radiogenic heat
B. primordial heat
C. superheating
D. heat from the sun
5. How the conduction in the surface of the earth affect the temperature of our
atmosphere?
A. Air molecules come in contact with the warmer surface of the land and
ocean resulting to the increase of its thermal energy.
B. Air molecules come in contact with the cooler surface of the land and
ocean resulting to the decrease of its thermal energy.
C. Air molecules do not come in contact with the warmer surface of the
land and ocean resulting to the increase of its thermal energy.
D. Air molecules do not come in contact with the cooler surface of the land
and ocean resulting to the increase of its thermal energy.
6. What are the two factors that affects conduction on the Earth’s surface?
A. radioactive decay and nuclear disintegration of elements
B. heat from the Earth's core and radiation from the Sun
C. movement of plates and radiation from the Earth’s core
D. stored magma and volcanic eruption
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8. What kind of heat transfer occurs mostly on the Earth’s surface?
A. conduction
B. convection
C. insolation
D. radiation
9. How does the mantle behave as a viscous fluid on a geological time scale?
A. radiation
B. pressure
C. temperature
D. altitude
10. What refers to the shaking of the surface of the Earth resulting from a
sudden release of energy caused by a convection current?
A. earthquake
B. volcanic eruption
C. storm surge
D. hurricane
11. Which of the following are boundaries between the three major layers of the
earth?
A. arches
B. discontinuity
C. poles
D. plates
12. What heat transfer of fluid in the earth’s interior results to the movement of
rocky mantle up to the surface of the earth?
A. convection current
B. conduction
C. insolation
D. radiation
13. Which of the following stores magma and located in a region just beneath the
crust all the way to the core?
A. crust
B. outer core
C. inner core
D. mantle
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15. How much is the approximate terawatts in the flow of heat in Earth’s interior
to its surface?
A. 41 terawatts
B. 43 terawatts
C. 47 terawatts
D. 49 terawatts
Additional Activities
Directions. Using your smartphones, take a picture of five (5) common
activities/scenarios on which heat transfer is applied. It may be material, event or
situation. Classify each whether it is conduction, convection or radiation. Provide
brief explanation to support your answer. Post the picture and your answer on a
separate sheet of paper.
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Week
What I Know
Directions. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. What term should be used to describe a semi-liquid hot molten rock
located beneath the Earth?
A. lava
B. sand
C. rocks
D. magma
2. What do you call the semi-liquid hot molten rocks found on the surface of earth
once the volcano erupts?
A. magma
B. rocks
C. sand
D. lava
3. What process occurs if there are formation and movement of magma under
the earth’s crust?
A. decompression melting
B. partial melting
C. heat transfer
D. flux melting
A. Asthenosphere
B. Earth’s crust
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C. Earth’s core
D. Lithosphere
A. decreases
B. increases
C. remains the same
D. all of the above
A. addition of volatiles
B. decrease in pressure
C. an increase in pressure
D. an increase in temperature
A. biotite
B. quartz
C. feldspar
D. none of the above
10. Conduction in mantle happens when heat is transferred from hotter molten
rocks to the Earth’s cold crust. What process is being described?
A. flux melting
B. heat transfer
C. partial melting
D. decompression melting
11. Mantle rocks remain solid when exposed to high pressure. However, during
convection, these rocks tend to go upward (shallower level) and the pressure is
reduced. What process is being described?
A. flux melting
B. heat transfer
C. partial melting
D. decompression melting
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12. When water or carbon dioxide is added to hot rocks, the melting points of
minerals within the rocks decrease. What process is being described?
A. flux melting
B. heat transfer
C. partial melting
D. decompression melting
13. During partial melting of magma, where does heat transfer take place?
A. convergent boundary
B. mid-ocean ridge
C. subduction zone
D. all of the above
14. During partial melting of magma, where does decompression melting take
place?
A. convergent boundary
B. mid-ocean ridge
C. subduction zone
D. all of the above
15. During partial melting of magma, where does flux melting take place?
A. convergent boundary
B. mid-ocean ridge
C. subduction zone
D. all of the above
Lesson 1 Magmatism
Do you still remember what happened to Taal Volcano last January 12, 2020? Yes,
you are right. This volcano, which is located at the province of Batangas, spewed ash
plumes up to nine miles (14 kilometers) into the air due to a “steam-driven” or
phreatic eruption. According to the Philippine Institute of Volcanology and
Seismology (PHIVOLCS), for the past two days, over 600 volcanic tremors have been
recorded which was an indication of continuous movement of magma or molten rocks
beneath the volcano. You might be wondering how magma got inside the volcano.
For this module, we will be discussing all about magma; its formation and
composition.
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What’s In
Activity 1. Decoding Time
In the previous lesson, you have learned that Earth’s interior is the site of
great amount of heat. Let us review first about this before proceeding to the next
topic.
Your task is to reveal the magic words by decoding the given numbers to their
corresponding letters of the alphabet. Then, complete the statement below using
those words.
18 1 4 9 1 10 9 15 14
1. Word: ______________________________________
18 1 4 9 15 7 5 14 9 3 8 5 1 20
2. Word: ______________________________________
3 15 14 4 21 3 20 9 15 14
3. Word: ______________________________________
16 18 9 13 15 18 4 9 1 12 8 5 1 20
4. Word: ______________________________________
3 15 14 22 5 3 20 9 15 14
5. Word: ______________________________________
9 14 20 5 18 14 1 12 8 5 1 20
6. Word: ______________________________________
The Earth’s internal heat comes from two main sources: the radiogenic heat
produced by the radioactive decay of isotopes in the mantle and crust, and the (7)
_______________left over from the formation of the Earth. The heat can be transferred
by three processes, namely, (8) ____________, (9) _______________, and (10)
_______________.
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What’s New
Activity 2. Picture Analysis
Mount Mayon is one of the most active volcanoes in the Philippines. It erupted for
eight minutes last January 23, 2018, spewing a 3-mile-tall column of debris and
volcanic gas. It exploded at least five more times for two days.
B. What is the material being extruded by Mount Mayon? Where do you think
did this material come from?
___________________________________________________________________________
___________________________________________________________________________
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What is It
What is Magma?
Magma is composed of semi-liquid hot molten rocks located beneath the Earth,
specifically in the melted mantle rock and oceanic plate. This molten state, when
solidified, creates igneous rocks found on the surface of the Earth.
Do you know the difference between magma and lava? Magma and lava are both
molten rocks. However, they differ in location. Magma is found in the magma
chamber of the volcano while lava is found on the surface of earth once the volcano
erupts.
Magmatism is a process under the earth’s crust where formation and movement of
magma occur. So where does these formation and movement take place? These
happen in the lower part of the Earth’s crust and in the upper portion of the mantle,
known as asthenosphere.
Guide Questions:
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How is magma formed?
The magma present in the lower crust and upper mantle of the Earth is formed or
generated through the process of partial melting. In this process, different minerals
in rock melt at different temperature and pressure. Another factor being considered
in this process is the addition of volatile materials such as water and carbon dioxide.
This is a diagram showing how minerals in rocks undergo partial melting.
Rocks are composed of minerals. These rocks start to melt once the temperature in
the lower crust and upper mantle increases or exceeds the melting point of minerals.
The temperature of mantle is around 1200 degrees Celsius. Rock minerals such as
quartz and feldspar begin to partially melt at around 650-850 degrees Celsius.
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as decompression melting. This process occurs at the Mid-Ocean Ridge, an
underwater mountain system.
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What’s More
Activity 3. Concept Map
Directions. Complete the concept map about Magmatism. Choose your answers on
the box below.
105
Activity 4. What Do You Think?
Directions. Based on the discussion, justify your answer to the following questions.
a. Do you think partial melting will occur if the pressure is high in the
asthenosphere?
__________________________________________________________________________
__________________________________________________________________________
b. Do you think partial melting will occur if there is too much amount of water
in the subduction zone?
__________________________________________________________________________
_________________________________________________________________________
c. Do you think partial melting will occur if there is direct contact of hot molten
rock in the Earth’s crust?
___________________________________________________________________________
___________________________________________________________________________
106
What I Can Do
_____________________________________________
_____________________________________________
A.
______________________________________________
______________________________________________
C.
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Activity 7. ACRONYM!
Directions. Use the word MAGMATISM as an acronym. Use each letter to represent
word/s that is related to the lesson.
Assessment
Directions. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. What process occurs if there are formation and movement of magma
under the earth’s crust?
A. flux melting
B. heat transfer
C. partial melting
D. decompression melting
4. What do you call the semi-liquid hot molten rocks found on the surface of
earth once the volcano erupts?
A. lava
B. sand
C. rocks
D. magma
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5. During partial melting of magma, where does decompression melting take
place?
A. convergent boundary
B. mid-ocean ridge
C. subduction zone
D. all of the above
7. When water or carbon dioxide is added to hot rocks, the melting points of
minerals within the rocks decrease. What process is being described?
A. flux melting
B. heat transfer
C. partial melting
D. decompression melting
10. What will happen to the temperature of rocks during partial melting?
A. decreases
B. increases
C. remains the same
D. all of the above
11. During partial melting of magma, where does heat transfer take place?
A. convergent boundary
B. mid-ocean ridge
C. subduction zone
D. all of the above
12. Mantle rocks remain solid when exposed to high pressure. However, during
convection, these rocks tend to go upward (shallower level) and the
pressure is reduced. What process is being described?
A. flux melting
B. heat transfer
C. partial melting
D. decompression melting
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13. During partial melting, which of the following minerals melt first?
A. biotite
B. quartz
C. feldspar
D. both b and c
14. During partial melting of magma, where does flux melting take place?
A. convergent boundary
B. mid-ocean ridge
C. subduction zone
D. all of the above
Additional Activities
Directions. Read the poem below and answer the question that follows.
Magma
by Jemie Ann A. Quiroba
HUMSS 12 SY 2019-20
I kept myself
I hid to deep
Burned myself, with my own heat
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Week
The module included lesson about the Changes in Mineral Components and Texture
of Rocks (Metamorphism).
1. Describe the changes in mineral components and texture of rocks due to changes
in pressure and temperature (metamorphism).
2. Identify rock samples based on the effects of changes on temperature and
pressure.
3. Analyze through a diagram on how temperature and pressure affect the mineral
components and texture of rocks.
What I Know
Directions: Read and analyze each statement and choose the letter of the correct
answer. Write your answer in a separate paper.
4. Which of the following led to the formation of deformed rocks with foliation?
A. volume of air entering the rocks
B. temperature and rising of magma
114
C. temperature and volume of minerals
D. pressure and recrystallization of minerals
4. Which of the following led to the formation of deformed rocks with foliation?
E. volume of air entering the rocks
F. temperature and rising of magma
G. temperature and volume of minerals
H. pressure and recrystallization of minerals
10. What happened to the temperature and pressure if the rocks are buried down
deep?
A. increases
B. decreases
C. remain constant
D. intermittently degrading
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11.Which of the following is NOT true about metamorphism?
A. schist
B. gneiss
C. marble
D. phyllite
14. Which type of metamorphism is caused by high temperature and high pressure
enacted over a large volume of crust?
A. burial
B. contact
C. regional
D. pyroclastic
:
15. Which of the following is a distinct projecting textural feature of regional
metamorphic rocks?
A. ripples
B. bedding
C. foliation
D. non-foliation
This part of the module contains topics about metamorphism. Students must
describe changes in mineral component and texture of rocks due to changes in
pressure and temperature by doing the different activities included in this part of the
module. Likewise, concept about the metamorphism is available for the students
reference in doing each activity incorporated in the procedure.
What’s In
Metamorphism is the change that takes place within a body of rock as a
result of it being subjected to conditions that are different from those in which it is
formed. It is from the Greek word “meta” means change and “morphe” means form.
116
Major Task: Take note of the number of correct responses you will be
making in every activity (What I know, What’s new, What is it, What’s more
A and B, What I have learned, and What I can do). Then, look for the
corresponding letter of each number of responses and think of the words
which are associated in metamorphism. Accomplish it in the “Additional
Activity” part.
Example:
A. What I know: 6-F=Fluid
B. What’s new : 4-D= Deep Rock
C. What is it: 7- G=Gneis
D. What’s more A&B: 9-I= Intrusive
E. What I have learned: 8-H=Heat
F. What I can do: 5=E= Energy.
What’s New
Directions. The box in the left side contains important words which may or may not
be associated to metamorphic process. Identify words which are related to the said
process by choosing it from that box and write it on the opposite box.
HEAT
VOLCANIC ROCK
PRESSURE
FLUID
MANTLE
TEMPERATURE
WEATHERING
CEMENTATION Score:
_______
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What is It
Activity: Heat, Pressure and Metamorphism
METAMORPHIC ROCK is formed at the surface of the
Earth through the process of metamorphism with
recrystallization of minerals in rocks due to changes in
pressure and temperature conditions.
MAIN FACTORS
118
Let’s do it!
Directions. Answer the question below by putting a check in the box which will
response to the question.
Question: How do temperature and pressure affect the metamorphic rock formation?
(5 points)
If the rocks are buried deep, temperature and pressure will get increased.
Contact metamorphism creates no-foliated metamorphic rocks.
Magma will bake the surrounding rocks due to difference in temperature.
Deformed rocks with foliation/lineation is brought by pressure and
recrystallization of minerals.
Pressure is the main factor of contact metamorphism Score:
Slate and gneiss are examples of foliated rocks. _______
What’s More
Activity A: Metamorphism Map
Directions. Complete the concept map about metamorphism by supplying the
missing words and phrases which can be chosen from the box below.
Non-foliates
Ex. Score:
_______
Key Terms
form volcano non-Foliated magma heat
lineation/foliation fine grain pressure slate
schist hornfels marble quartzite
gneiss
119
Activity B: Word Cryptogram
Directions. Arrange the scrambled letters by putting the correct sequence on the
shaded boxes to form a word (rock sample) based on the given description. Use the
numbered boxes to discover the hidden word.
T E L A S
2
2. Plays mica crystals visible from metamorphism of clay or feldspar.
T S S I C H
4
3. Metamorphism of bituminous coal.
A N I T H R A C T E
S S I N E G
120
Activity C: Rock You
Directions. Read and analyze the diagram below. It will provide you better
understanding about the lesson.
Sedimentary
Rock
121
Activity D: My Metamorphic Puzzle
Directions. Identify the words being described on the right part and write it on the
specific area.
Across
5
3. Used commercially classroom
blackboards
4
5. Used construction of building
floors
1 Down
122
What I Have Learned
Directions. Match the statements in column A with the indicated terms in column
B. Write the letter of the correct answer on the blank before each number.
A. B.
Score:
_______
123
BONUS TASK: For your own reflection and understanding, answer the posted
question below. You may use the available diagram in answering the question.
Based from the quotation above, how do you see the similarities and differences of
human and rocks?
Human Rock
What I Can Do
A. Directions. Give the uses of the following metamorphic rock samples.
Write your answer in the box provided under each rock samples.
124
B. Directions. Read the following tips on how you can make rock useful at home.
Look for rocks with different textures as the highlight of your task. Choose
one from the three suggestions and once you do it, take a picture of it and
attach it in the space below. In case, you do not have ways to print it, just
illustrate your project on the space provided.
Assessment
Directions. Read and analyze each statement and choose the letter which
corresponds to the correct answer by shading the circle before the number.
125
3. What is the main factor that affects regional metamorphism?
A. heat
B. fluid
C. water
D. pressure
126
10. What happens to the grain size of the minerals in rocks when the heat is
increased? Its size
A. increases
B. decreases
C. remains constant
D. degrades intermittently
15. Samer is walking down the river when she see an unknown metamorphic rock.
Which of the following characteristic can BEST help her to immediately identify
the type of metamorphism that the rock underwent using a magnifying glass?
A. foliation
B. grain size
C. name of the rock
D. kind of mineral present in the rock
Score:
________
______
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Additional Activities
A. Directions. Indicate the scores you obtained from the previous activities.
Please refer to the major task in case you forget the directions. Write your
answer on the space provided in the box below.
What I Know
What’s New
What is it
What I can Do
Assessment
128
B. Directions. For additional information, take time to read and observe the
concept map.
Pressure
Existing Rock
Pressure underground
can occur to
Water
of rock, forms
cools to erupts
make from a
The concept map above presents the processes between igneous and
metamorphic rocks. It shows how metamorphism takes place from any existing
rocks such as igneous rock.
129
Week
What I Know
Directions. Read the following questions and choose the letter of the best answer.
Write the chosen letter on a separate sheet of paper.
A. igneous rocks
B. metamorphic rocks
C. sedimentary rocks
D. all of the above
133
4. Which type of igneous rocks based on composition has the highest amount of
silica content?
A. felsic
B. intermediate
C. mafic
D. ultramafic
5. What happens to the molten rocks when they reach the Earth’s surface?
A. clastic
B. extrusive
C. intrusive
D. non-clastic
8. Which type of igneous rock forms when magma hardens beneath Earth's
surface?
A. clastic
B. extrusive
C. intrusive
D. non-clastic
9. What is the size of the crystals if the rock cools slowly and forms below the
Earth’s surface?
A. large
B. no crystal
C. small
D. none of the above
A. diorite
B. gabbro
C. granite
D. obsidian
134
11. Which of the following is NOT true about extrusive rocks?
A. aphanitic
B. glassy
C. phaneritic
D. vesicular
15. How does the amount silica affect the color of igneous rock?
135
What’s In
ACROSS
1. It is the change that
takes place within a body
of rock as a result of being
subjected to conditions.
3. It is a type of
metamorphic rock which
is formed due to pressure.
DOWN
2. It is the main factor of
regional metamorphism.
4. It is a type of
metamorphic rock which
is formed due to heat.
5. It is the main factor of
contact metamorphism.
What’s New
Activity 2. Comic Strip Analysis
Directions. This comic presented below is about a short conversation of a
grandmother and her granddaughter. Read the comics and answer the given
questions.
Grandma,Grandma,
is that Taal
is that Yes,
Yes, mymy dear. That is Taal
Volcano?
Taal Volcano? dear.Volcano. It has rocks
That is
formed from solidified lava.
Taal
Volcano.
It has
rocks
formed
from
solidified
136
lava.
This
This isis
a a granite. It is an
Wow! I want to learn more
Wow! I want to
granite.igneous rock. about rocks Grandma.
learn more
about rocks
Guide Questions:
What is It
What are Igneous rocks?
Igneous rocks are one of the three major categories of rocks. The word igneous is
derived from the Latin word for fire, ignis or ignus.
These rocks are commonly found in the surface and beneath the Earth, specifically
in divergent boundaries, convergent boundaries, subduction zones and hotspots. Not
all igneous rocks have the same physical and chemical characteristics. They differ in
the origin, process of formation, color, density, size of grains, crystals and many
more.
137
Color usually dark usually light colored
Density usually dense usually low density (light)
mafic: magnesium and felsic: feldspar
Composition
iron (aluminum)
cools quickly
Rate of Cooling cools slowly
(with voids/holes)
fine/small or no grains
Size of Grains large/coarse grains
(fine/glassy)
Size of Crystals large crystals small or no crystals
Basalt Obsidian
Rhyolite Scoria
Figure 2. Examples of Extrusive Rocks
138
precipitate and will not be present in the igneous rocks. The viscosity of magma is
also affected because of silica content.
There are four classifications of igneous rocks based on silica content: ultramafic,
mafic, intermediate and felsic.
Rock types
139
SiO2 70% 60% 50% 40%
MgO 0.95% 2.5% 15% 48%
Major Quartz Biotite Pyroxene Pyroxene
mineral Alkali Feldspar Alkali Feldspar Plagioclase Olivine
content Quartz Feldspar
Based on the illustration, you will notice the differences of these four classifications
of igneous rocks in terms of their color. Ultramafic has the darkest color and felsic
has the lightest color. To sum, the higher the silica content is, the lighter its color
while the lower the silica content is, the darker its color. Thus, amount of silica
affects the color of the rocks.
Felsic has the highest silica content while ultramafic has the lowest silica content.
On the other hand, felsic is exposed to 700 degree Celsius and ultramafic is exposed
to 1200 degree Celsius. It means when igneous rock is exposed to extreme high
temperature, its color is darker, while if it is exposed to lower temperature, its color
is light.
140
What are the types of igneous rocks based on texture?
Igneous rocks have different textures. Texture of a rock is the size and arrangement
of the minerals it contains.
What’s More
141
Obsidian 9. lava fast 10.
composed of magnesium
Extrusive magma cools slowly
and iron
Intrusive lava cools quickly small or no crystal form
form from cooling and
large crystal form composed of aluminum solidification of lava and
magma
Igneous Rock
1.
2.
3.
4.
5.
6.
7.
8.
9.
142
Activity 5. Venn Diagram
Directions. Compare and contrast the four classifications of igneous rocks based
on composition.
Ultramafic
Felsic Mafic
Intermediate
Activity 6. Crossword
Directions. Fill-in the crossword puzzle with the words being described. Match the
number of the sentences to the boxes of placed across or down the grid.
ACROSS
1. Rocks have two distinct
grain sizes.
2. The mineral grains are
too small to see with the
unaided eye.
3. Rocks have many pits
from gas escape.
DOWN
1. Rocks have large
minerals.
4. Rocks do have obvious
minerals
143
What I Have Learned
144
What I Can Do
1.
2.
3.
You are in a community park. While walking, you have noticed that there are
many rocks on the ground. From these rocks, how will you know if they are igneous
rocks? What are the things you should consider in identifying igneous rocks?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
145
Assessment
Directions. Read the following questions and choose the letter of the best answer.
Write the chosen letter on a separate sheet of paper.
1. What Latin word was the term “igneous” derived from?
A. ignus
B. lithos
C. meta
D. sedere
3. Which type of igneous rocks based on composition has the highest amount of
silica content?
A. felsic
B. intermediate
C. mafic
D. ultramafic
6. What happens to the molten rocks when they reach the Earth’s surface?
A. They flow continuously.
B. They cool down and solidify.
C. Their temperature remains the same.
D. They remain semi-liquid molten rocks.
7. Which type of igneous rock forms when magma hardens beneath Earth's
surface?
A. clastic
B. extrusive
C. intrusive
D. non-clastic
146
C. intrusive
D. non-clastic
10. What is the size of the crystals if the rock cools slowly and forms below the
Earth’s surface?
A. large
B. no crystal
C. small
D. none of the above
14. How does the amount silica affect the color of igneous rock?
A. It has no effect at all.
B. It doesn’t matter what the color is.
C. The lesser the silica has, the lighter the color is.
D. The more the silica it has, the lighter the color is.
147
Additional Activities
A. Directions. Take some pictures of igneous rocks available in your barangay
and make a collage. Write a short paragraph or description about your
output.
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
B. Directions. Read the quotation and write your interpretation about it.
- WhenEarthSpeaks
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
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Week
The module included lesson about the Movements of Plates and Formation of Folds
and Faults.
What I Know
Directions. Read and analyze each statement and choose the letter which
corresponds to the correct answer by shading the circle before each number.
152
153
154
Lesson 1 Movement of Plates and Formation of
Folds and Faults
This module contains topics about plate movement leading to the formation of folds
and faults. Students must explain how the movement of plates leads to the formation
of folds and faults by doing different activities included in this module. Likewise,
concept about the Plate’s movement is available for the students reference in doing
each activity incorporated in the procedure.
What’s In
Directions. Cross out the words which are not associated with plate tectonics. Then,
put the remaining words and write your understanding below the box.
Score:
_______
155
What’s New
Directions. Read and analyze the excerpt. Identify the three indicated types plate
movements. Illustrate it on the box provided below (10 points).
156
What is It
A. Directions. Complete the diagram below by filling in the blank boxes with the
corresponding terms/phrases.
PLATE TECTONICS
CONVERGENT
‘
Plates move
Plates pull apart alongside each other
from each other in different
directions
Score:
_______
157
A. Directions. Read and analyze the diagram below which will provide you
background information about Plate Boundaries.
Transform
Plate
Boundary
It is also called as strike slip fault boundary, the plates slide past each other
horizontally. This is a type of boundary that cuts through California, the well-
known San Andreas Fault. The San Andreas fault zone, which is about 1300
km long and is tens of kilometer wide, slice through two thirds of the length
of California. Along with it, the Pacific Plate has been for 10 million years, at
an average rate of about 5cm/yr (Pavico and Faraon, 2007, 193).
Convergent
Plate
Boundary
The heavier oceanic crust sinks below the lighter continental crust. It
happens along convergent boundaries where plates are moving toward each
other and sometimes one plate sink under another (subduction). Marianas
Trench marks where the fast moving Pacific Plate converges against the
slower moving Philippine Plate. This boundary is often sits of major volcanoes
such as Mount Fuji in Japan. In a collision of two pieces of oceanic crust, the
result is a chain of volcanic islands, of which Indonesia is a prime example.
Where oceanic crust collides with a plate carrying continent, the result is a
chain of volcanoes on the continent such as the Cascade of volcanic chain in
Pacific Northwest of the US and the Andes Mountains of South America.
When two continental crusts collide, the result is a range of mountains such
as Himalayan Mountain yr (Pavico and Faraon, 2007, 193-194).
158
Divergent Plate Boundaries are boundaries where the earth’s tectonic plates
are moving apart. For most part, these boundaries are located on the ocean
floors, where they form a continuous chain of volcanic mountains and rift
called mid-ocean ridges that extend throughout the earth’s oceans. Mid-
Atlantic Ridge is good example which runs down the middle of the Atlantic
Ocean. As the plates move apart, magma wells up to fill the space between
them, and this is why divergent plate boundaries are the sites of volcanic
activity. It is also a set where the earth’s crust is growing (Pavico and Faraon,
2007, 194).
What’s More
Activity A: Crossword Puzzle
Directions. Fill out the crossword puzzle with the correct terms using the given
clues.
Across
3
2. Fracture or discontinuity in a volume of
rocks.
4. Plates are moving away from each other.
1
6. Horizontal motion movement of plates.
2
9. A chain of mountains.
8
Down
5 10 1. Earth’s crust and uppermost mantle
3. Chain of volcanoes formed from
4 subducting plates.
5. Plates are moving toward each other
9
and collide.
7. Occur when flat surface bent or curved.
8. A large landform formed from tectonic
7
forces.
6
10. Low area between hills and mountain
Score:
_______
159
Activity B: My Understanding of Plate Movement
Directions. Complete the paragraph below. The first part is already given.
Faults, folding, ridges, mountains, valleys and volcanic arc are formed when
the plates move because
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
_______________________________________________________________________(5 points).
A. There are two tables below. Table A includes three types of plate boundaries
with their respective descriptions and illustrations while Table B is blank table
where you can put your answer.
B. Observe Table A by making sure that all the descriptions and illustration
referring to specific type of plate boundaries are properly placed.
C. In case you notice errorrs, rewrite the content of table A into table B with
correct cclassification of all the descriptions.
Table A
160
Table B
Directions. Read and Analyze the the diagram below. Take note of some important
details which will be used in next activities or questions
161
1
RESPOND
2.
1.
RESPOND 2.
3.
Score:
_______
162
What I Have Learned
Directions. From the word pool given below, identify the term being described in the
following statements.
__________1. This phenomenon is created during transformation of plate’s movement
and it is a kinematic phenomenon caused by the relative density of
oceanic lithosphere and relative weakness of asthenosphere.
__________2. This plate’s movement creates mountain and volcanic arc. Marianas
Trench is also created by this movement.
__________3. The movement of this plate is towards the opposite direction or moving
away from each other.
__________4. It is a process of rising up hot, dense liquid materials and creates new
seafloor.
__________5. This is a theory that supports that supports continental drift theory and
seafloor spreading.
What I Can Do
Directions. Supply the needed information by writing it on the space provided.
A. “Everything happens for a reason.” How will I relate the given quotation to
the lesson?
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
163
B. In your area, what natural scenery do you think is a result of colliding
plates?
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
C. How will you justify that plate tectonics or movement of plate boundaries
is also beneficial to us?
(Cite you reference)
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
164
Assessment
Directions. Read and analyze each statement and choose the letter which
corresponds to the correct answer by shading the circle before each number.
165
⚪ ⚪ ⚪ ⚪ 6. Which of the following diagrams shows the strike slip fault
A B C D wherein San Andreas Fault which is bounded by North
American Plate and the Pacific Plate is the best example?
A.
B.
C.
D.
166
⚪ ⚪ ⚪ ⚪ 11. Which of the following is associated with discovery of seafloor
A B C D spreading?
A. Mountains and Volcanoes are denser than mantle
B. Rotational pole of the earth has migrated or moved.
C. The crust of the continents is denser than the crust of
the ocean
D. The crust of the oceans is very young relative to the
age of the crust of the continents
Score:
_______
167
Additional Activities
A. Directions. Conduct a short interview with one or two of your family members.
Ask them about how they think the mountain, valley, ridges and volcanoes are
formed. List all their responses. Afterwards, inform them on how those formations
formed based on what you have learned from the lesson.
1. Flyers
2. Vlog which will be post on your social media account.
Rubrics:
5 points: Innovation (It should shows creativity)
10 points: Content (It should include explanations based on the lesson)
168
Week
Since the concept about rocks and its types were discussed in the previous lesson,
this module serves as a continuation of how rocks produce strata and what they may
become once they are separated from its original rock layer. It also involves the
possibilities of knowing the relative age of each rock layer due to the presence of
fossils it contains.
172
What I Know
Before you use this module, take the Pretest below.
Directions: Read each item carefully. Choose the letter of the best answer and write
the chosen letter on a separate sheet of paper.
5.What can you infer when a sandstone comes in contact with a granite?
A. The granite is older than the sandstone.
B. The granite is younger than the sandstone.
C. The granite was intruded into the sandstone.
D. The granite and the sandstone have the same age.
173
7. Which principle states that the physical, chemical, and biological processes
that work today are the same forces that worked in the past?
A. Principle of Intrusions
B. Principle of Unconformities
C. Principle of Uniformitarianism
D. Principle of Original Horizontality
For item nos.8-10, refer to the diagram of rock strata to answer the questions
that follow.
A. Principle of Unconformities
B. Principle of Uniformitarianism
C. Principle of Original Horizontality
D. Principle of Cross-cutting relationship
A. Layer F
B. Layer G
C. Layer E
D. Layer A
10. What is the correct sequence in the relative age of rock from youngest to
oldest?
A. Layer A, B, C, D, E, F, G
B. Layer G, F, E, D, C, B, A
C. Layer A, B, G, C, D, E, F
D. Layer G, F, E, D, C, B, A
174
11. Which type of dating method can be used in rock layers applying the
Law of Superposition?
A. Radioactive Dating
B. Absolute Dating
C. Relative Dating
D. Isotopic Dating
12. According to the Law of Superposition, where are the oldest fossils usually
found?
A. somewhat near the surface
B. at the top of the rock layers
C. in the middle of the rock layers
D. near the bottom of the rock layers
A. Inclusions
B. Faunal succession
C. Original Horizontality
D. Cross cutting relationship
A. Erosion
B. Folding
C. Metamorphism
D. Marine Regression
175
Lesson 1 Rock Layers
Are the current features of the Earth the same as they were 4.6 billion years ago?
Well, the answer is no. The Earth had undergone geological alterations and
evolutionary processes that changed its features. The exogenic and endogenic
processes that happened in the surface and within the inner portion of the Earth
may contribute to these alterations that occurred. The rocks are being studied by
geologists because they contain clues of what the Earth had been in the past.
In this module, the formation of rock strata will be determined including the order of
rock layers, the manner on how rock layers are formed or deformed due to physical
factors and the age of rocks using the relative and absolute dating method.
What’s In
Before proceeding to the content of this module, let us first have a review on the
learnings that you gained in our previous lesson related to rocks and rock cycle.
Try to complete the rock cycle using the terms and the processes given. Write the
term/s in the box/circles and processes/events in between arrows to show the
connections in the rock cycle.
176
What’s New
If you will be given a cake for your birthday, how many layers do you wish to have?
How many flavors do you want? What will be the order of flavor in each layer?
If you apply pressure on cakes, it will be deformed, flattened, or twisted. Just like
the layers in the cake, rocks can also form layers due to sediments deposited on
rocks or some forces that act on it which causes its deformation. These are forces
that may bring alteration to rock layers or the change in its formation in the Earth’s
surface.
In geologic time, it covers the whole sweep of Earth’s history, from how and when the
earth was first formed, to everything that has happened on, in, and to the entire
planet up to now.
What is It
The idea behind the concept that the Earth is billions of years old originated in the
work of James Hutton. Hutton concluded that there are forces that changes the
landscape of the Earth in the past. This conclusion is based on his observation in
the geological processes that were taking place in his farm.
His Principle of Uniformitarianism states that the current geologic processes, such
as volcanism, erosion, and weathering are the same processes that were at work in
the past. This idea was refined by other geologists that although the process of the
past and the present are the same, the rates of this process may vary over time. The
Earth’s history was studied using the different records of past events preserved in
rocks. The layers of rocks are like the pages in our history books.
177
Stratigraphy Stratification
It is also known as bedding, which
It is the branch of geology that
is the layering that happens in
deals with the description,
correlation, and interpretation of sedimentary and igneous rocks
stratified sediments and stratified formed at the surface of the Earth
rocks on and within the Earth. that comes from lava flows or other
It is the study of the rock volcanic activity.
layers(strata). It is expressed by rock layers
It will give you clues to the location (units) of a general tabular or
of ancient seas, mountains, lenticular form that differ in rock
plateaus and plains. type.
As early as the mid 1600’s, the Danish scientist Nicholas Steno studied the relative
position of sedimentary rocks. Sedimentary rocks are formed particle by particle, bed
by bed, and the layers are piled one on top of the other. These rock layers are also
called strata.
Stratigraphic Laws
Stratigraphic laws are basic principles that all geologists use in decoding or
deciphering the spatial and temporal relationships of rock layers. These includes the
following: Original Horizontality, Lateral Continuity, Superposition, Cross Cutting,
Law of Inclusions and the Law of Faunal Succession.
178
Law of Superposition Law of Inclusions
The largest and heaviest rock A rock mass that contains
layer that settled first at the pieces of rocks called
bottom is the oldest rock layer. inclusions are younger
The lightest and smallest that than the other rock
settled last is the youngest rock masses.
layer.
LAWS OF
STRATIGRAPHY
179
The Law of Stratigraphy shown -in Figure 1 indicates deposition, reshaping and
deformations of the rock layers due to geological processes.
Three Types of
Unconformities:
Non -conformity
It originates between sedimentary
rocks, metamorphic or igneous rock
when sedimentary rock lies above
and was deposited on the pre-existing
and eroded metamorphic or igneous
rock.
180
What’s More
Activity 1.1 - Who’s Older, Who’s Younger?
The rock layers below labelled A to F undergo sedimentary process that results to
changes in rock form. Use the diagram of a rock layer below to complete and answer
the questions.
Guide Questions:
181
Activity 1.2 Word Pool
Read the words in the box and the statements below. Fill the blanks with the
words/phrases that best complete the sentences.
cross-cutting sedimentary
erosion stratification
extrusive superposition
fault unconformity
intrusion younger
182
Activity 1.3 Match it!!!
Match the descriptions in Column A with the terms in Column B. Choose the letter
of the correct answer.
COLUMN A COLUMN B
1. Unconformities were sedimentary
rock layers that are tilted forms a A. Superposition
wave or angle in rock layers.
2. Rock layers contains embedded
fossils by which rock maybe B. Angular conformity
identified.
Study the rock strata in the right and try to answer the questions in the left.
183
Lesson 2 Correlation of Rock Layers
Have you experienced playing or fitting cut out patterns or puzzle?
One of the evidences used by geologist in tracing the history of the Earth was with
the identifications and the correlations of rock layers. Rock layers were subjected to
alteration due to different geologic processes that act or apply on it. Such forces could
result to tilting, uplifting, compression, and subductions of rock layers. These rock
layers have the tendency to be separated from each other. One way of how these
rock layers be identified is with the utilization of correlation.
Geologists need to correlate rocks from one place to another to get more complete
record of Earth’s history over time. They try to determine the relative age of widely
separated strata or rock layers. They used correlation trying to fit together
sedimentary strata in different places just like a cut out puzzle.
What’s In
In the previous lesson, you had learned that rock layers may undergo different
formations due to several geologic process taking place in each rock layer. These
concepts of stratigraphy are all stated in the Steno’s Law of Stratigraphy.
Let us find out if you can still remember how this law can characterize each rock
layer pictured below. Identify the pictures which is best explained by the Laws of
Stratigraphy in the box below. Choose the letter of the correct answer.
184
What’s New
How do geologists correlate rock layers?
The process of showing that rocks or geologic events occurring at different locations
are of the same age is called correlation. Geologists have developed a system
for correlating rocks by looking for similarities in composition and rock
layer sequences at different locations.
3. Bed rock
a deposit of solid rock that is typically buried beneath soil and other
broken or unconsolidated material (regolith).
made up of igneous, sedimentary, or metamorphic rock, and it often
serves as the parent material for regolith and soil.
185
How to match correlated rock layers?
Matching of rock layers may be determined by merely looking at its features. Look at
the three columns of rock layers below. Let us determine how they are correlated.
These three columns represent rock layers from three separate locations or outcrops.
Some columns may be missing layers due to erosion. No single column represents a
complete record. Your job is to line them up so a complete record of the region can
be seen. Find one or more layers present in all columns that can be matched like a
puzzle.
186
After matching correlated rock layers, we can determine the relative age of each layer
according to the law of superposition. Limestone in location A is the oldest and
limestone in location C is the youngest rock layer. While those rock layers having
the same composition, textures, and fossil content were considered as rock layers
with the same age.
In matching up rock layers, superposition and cross-cutting are helpful. When rocks
are touching one another, the lateral continuity rock layers aid to match up with the
layers that are nearby. Geologists then match, or correlate, the different shorter
sequences to create a geological column that spans further back into earth’s past.
Correlations involve matching a particular rock unit in one exposure with its
counterpart at a different locality. By correlating various rock vulnerability separated
by great distances, geologic maps can be constructed and the original geographical
extent of the rocks can be estimated.
Types of Correlation
B) Fossil Correlation is a principle that geologists use to determine the age of rock.
It uses fossil with unique characteristics, such as geologically short lifespan and
easily identifiable features and use this information to estimate the age of a rock
layer in other areas that contain the same type of fossil or group of fossils.
There are fossils which are used to date the layers of rock that they are found in.
Fossils that can be used in this way are called index fossils, and rock layers with
the same index fossils in them can be correlated.
187
1. The fossilized organism must be easily recognizable and it must be easy to identify
because of its uniqueness.
2. Fossils must be geographically widespread, or found over large areas so that it can
be used to match rock layers separated by huge distances.
3. Fossils must have lived for only a short time, so that it appears in only horizontal
layer of sedimentary rocks.
What’s More
Analysis:
1. Arrange the rock layer from oldest to youngest. Use the number in the
designated rock layers.
Youngest _____
_____
_____
_____
_____
_____
_____
Oldest _____
2. Is the intrusion of igneous rock younger or older? _________
3. What rock layer is common in each rock column? _________
188
4. What environmental condition takes place in rock layer no.3? (fault, erosion)
5. In what earth’s feature is the rock layer in outcrop C probably located?
(volcano, sea)
6. Which outcrop/s show examples of unconformity? ___________
7. What type of igneous rock maybe deposited in outcrop C? (batholith, granite)
8. Which layer is considered as the beds? ___________
9. Which outcrop/location shows subsidence? _______
10. What geologic process happens in outcrop B? (folding, fault)
Unscramble the letters of the term/s being described by the given statement.
TERMS DESCRIPTIONS
It is the action of process of forcing body of igneous rock
1. N T U I S O I R N between sedimentary rocks.
Read the statement in each item and choose the correct answer in the parenthesis.
Identify the law or principle of stratigraphy being described by the given statement.
189
2. A fault cutting through a series of layers of rocks is (older, younger) than the
rock layers.
This is an example of the Principle of ______________________________________.
3. In a series of layers, the youngest layer is on the (bottom, middle, top) of the
sequence.
This is an example of the Principle of ______________________________________.
4. Sedimentary rocks that are folded must be (older, younger) than the forces
which deformed them.
This is an example of the Principle of ______________________________________.
Things to Ponder
190
What I Can Do
From the lists of human activities/practices, tell how these practices may trigger the
alterations of rock layers.
1. Mining
2. Quarrying
5. Forest denudation
Analysis:
3. How will you address the result of these practices and its magnitude to the
government since your generation are considered as the hope of the motherland?
191
Assessment
Directions: Read each statement and choose the letter of the correct answer.
1. What is the relative position of oldest rock layer as stated in the principle
of Superposition?
A. at top
B. at the bottom
C. at the middle
D. at random location
192
6. Which principles describes that geological processes operating at the
present time are same processes that have operated in the past?
A. Cross-cutting relationship
B. Original horizontality
C. Uniformitarianism
D. Inclusion
10. When sedimentary rocks deposited in flat layers are left undisturbed it
follows the statement in which of the given principles?
A. Cross-cutting Relationship
B. Original Horizontality
C. Fauna Succession
D. Superposition
193
11. What can be inferred if you find an outcrop of mud cracks in gray shale?
It can be inferred that the area was once ________.
A. a beach
B. a desert
C. a tidal flat
D. deep under the ocean
13. What makes index fossils so useful in identifying the relative age
of rocks?
A. They are short-lived.
B. They are radioactive.
C. They are old enough to be analyzed.
D. They are present in both young and older rocks.
14. Which type of conformities state that sedimentary rocks, when tilted or
folded, are overlain by more flat- lying layer of rock?
A. Angular Conformity
B. Disconformity
C. Nonconformity
D. Inclusion
194
Additional Activities
Illustrate an outcrop of a rock layer applying the principle or the laws of stratigraphy
similar to your previous activity. Use the legend of what will be present in these
particular layers in the outcrop. The guide of what you’re going to put in your outcrop
are found in the table below. Indicate them in your outcrop or block diagram. Be
creative in presenting your output. Place your illustration in the box.
Label Description
Lost before tilt This was the last layer to be formed before the rocks
tilted.
Youngest rock This is the younger rock above all the others.
Second oldest rock The rock layer is just above the oldest.
Thinnest rock It is the thinnest rock layer found between the fifth and
the third rock layer
Above the erosion This layer forms on top of earlier rocks after it was tilted
and eroded away.
195
Week
What I Know
Directions. Read the following questions and choose the letter of the correct
answer. Write the chosen letter on a separate sheet of paper.
1. Which of these is the best indication of the relative age of a rock layer?
A. on the topmost
B. at the bottom
C. upper part
D. lower part
199
4.The principle of horizontality is based on the observation that sediment usually
accumulates in _______________ layers.
A. horizontal
B. straight
C. vertical
D. round
5, Which of the following makes use of the position of rocks to determine its age?
A. Relative Dating
B. Absolute Dating
C. Radioactive Dating
D. Radiometric Dating
6. Which type of dating method can be used on rock layers by applying the Law of
Superposition?
A. Relative Dating
B. Absolute Dating
C. Radioactive Dating
D. Radiometric Dating
7.Which was the first method used to determine ages of rock and fossils?
E. Relative Dating
F. Absolute Dating
G. Radioactive Dating
H. Radiometric Dating
200
Refer to the diagram below and answer the questions that follow.
A. Layer 1
B. Layer 3
C. Layer 4
D. Layer 6
A. Layer 1
B. Layer 3
C. Layer 4
D. Layer 6
11. What method of Rock Dating is used in giving rocks an actual date?
A. Relative Dating
B. Absolute Dating
C. Historical Dating
D. Geological Dating
A. Principle of Half-life
B. Principle of Layering
C. Principle of Superposition
D. Principal of Floral Succession
201
14. Which of the following is NOT true about Absolute Dating?
How old is it? This might be the first question that will enter your mind when you
see an old rock or artifact. Certainly, that is one of the first thing that a geologist
wants to know.
Geologists find ways on how to determine the age and traces of history from the
large number of artifacts and monuments bestowed upon us by older civilization.
There are methods and techniques used by geologists to help them determine the
age of the materials that evolved in the past. In this lesson, the relative and absolute
dating processes will be discussed.
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What’s In
Activity 1: Solving the Earth’s Puzzle!
Directions. Find and encircle relevant words from the puzzle. Then, write an
appropriate sentence using the identified words.
A F F E N D F I N D C
D R O C K S A J H T O
M F S R E L A T I V E
A H S A R A G L S U A
B H I O T I E A T S R
C G L R Z Y S Y O A T
A B S O L U T E R N H
D A B S P I O R Y O R
E F S U L I T S O C O
Guide Questions:
1. How did you find the activity?
What’s New
We have learned that geologic time is measured in two ways: relative and absolute
age. Relative date or age measurement refers only to the order in which events
occurred. On the other hand, absolute age is age in years. It tells the order in which
events occurred and the exact amount of time that has passed since they occurred.
203
Activity 2: What’s in the Stack of Rock?
Directions. Look at the diagram of a rock layer. Focus on the sediment layer.
Figure 1. Sedimentation
Guide Questions:
1. How will you describe the rocks in the illustrations?
4. Can you determine the relative age of the rock based on the layering?
How about absolute age?
204
What is It
Relative Age
Prior to absolute age measurements, geologist used
field observations to determine the relative ages.
They used simple principle in order to get the
relative ages. The following are the principles used
by the geologists:
Figure 6. Horizontal
layers with dikes
205
Activity 3: A. Who’s the Oldest?
Directions. Use the letters in the diagram below to determine the age of rocks
applying the method of relative dating. List the rock layers from youngest to the
oldest relative to age.
Guide Questions:
__________________________________________________________________________
_
____________________________________________________________________
206
B. How many years?
Directions. Refer and analyze the diagram below to answer the provided questions.
Absolute Age
Since change is the only thing that is permanent, the measurement of absolute age
or exact date became a challenging task to the scientists. But they found a natural
process that occurs at constant rate and accumulates its record of the radioactive
decay of elements in rocks.
Radioactive elements decay because they are composed of unstable isotopes that
decompose spontaneously. Each atom has a certain probability of decaying at any
time. It has half-life or time for it to decompose into half.
207
In the previous example, the parent element is uranium (U) and the daughter
element is lead (Pb).
Again, the process of radioactive decay can be used for dating rocks because:
Radioactive decay proceeds at a constant, regardless of changes in conditions such
as temperature, pressure, or the chemical environment.
Half-Life
It is almost impossible to say when the last of the parent atoms will decay,
but the time taken for half the atoms to decay is comparatively easy to
predict. The half-life of a radioactive decay process is the time taken for half
the original parent atoms to decay.
The length of half-life is a unique feature of each decay process. The half-life
of the uranium is 713 million years. This means that if an igneous rock
contained 1000 atoms of U-235 when it solidified:
After 713 million years, it would contain 500 atoms of U-235 and 500 atoms
of the daughter element for the decay process, Pb-207.
208
What’s More
Age of rocks can be determined by using two methods. These methods are absolute
and relative dating.
Directions. Complete the concept map to show the differences between the two
methods of dating.
Used ___________
Use _________ method by
method (oldest found at the radioactive decay: concept of
bottom and youngest at the top) isotopes and concepts of half- life
209
Activity 5: Read and Fill!
Directions. Place the missing letters that best complete the term being described
by each statement.
WORD POOL
210
What I Can Do
Directions. Fill in the Venn diagram to show the similarities and differences
between absolute dating and relative dating. Use the words inside the word pool to
complete the diagram.
Word Pool
use of numeric qualitative method
value
give an idea of the order does not give the true age
of geologic events of rocks
211
Assessment
Directions. Read the following questions and choose the letter of the correct
answer. Write the chosen letter on a separate sheet of paper.
1. Which type of dating method can be used on rock layers by applying the
Law of Superposition?
A. Relative Dating
B. Absolute Dating
C. Radioactive Dating
D. Radiometric Dating
2. Which was the first method used to determine ages of rock and fossils?
A. Relative Dating
B. Absolute Dating
C. Radioactive Dating
D. Radiometric Dating
A. Relative Dating
B. Absolute Dating
C. Historical Dating
D. Geological Dating
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Refer to the diagram below and answer the questions that follow.
A. Layer 1
B. Layer 3
C. Layer 4
D. Layer 6
A. Layer 1
B. Layer 3
C. Layer 4
D. Layer 6
A. Superposition
B. Floral Succession
C. Original Horizontality
D. Cross-cutting Relationship
A. Relative Dating
B. Absolute Dating
C. Historical Dating
D. Geological Dating
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11. Which of these is the best indication of the relative age of a rock layer?
12. The absolute age of an igneous rock can best be determined by ___________
A. examining the rock’s relative position in a rock outcrop
B. examining the environment in which the rock is found.
C. comparing the size of crystals in the upper and lower parts of
the rock
D. comparing the amount of decayed and undecayed radioactive
isotopes
A. on the topmost
B. at the bottom
C. upper part
D. lower part
A. horizontal
B. straight
C. vertical
D. round
15. Which of the following makes use of the position of rocks to determine its
age?
A. Relative Dating
B. Absolute Dating
C. Historical Dating
D. Geological Dating
Additional Activities
If you will be asked to determine the age of a rock, which method will you use?
Justify you answer.
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Week
What I Know
2. Which of the following division in the geologic time scale is considered as the
“Age of the Reptiles”?
A. Cenozoic
B. Mesozoic
A. Paleozoic
B. Precambrian
3. Which of these is the best indication of the relative age of a rock layer?
A. the thickness of the layer
B. the chemical makeup of the layer
C. the distance of the layer extends over the Earth
D. the position of the layer compared to other layers
218
4. In an undisturbed rock profile, where can the oldest be found?
A. in the middle
B. at the bottom
C. on the top
D. anywhere
7. Which division in the geologic time shows evidence of molten rocks in the
Earth’s surface due to its high temperature?
A. Mesozoic Era
B. Precambrian
C. Miocene Epoch
D. Tertiary Period
8. What fraction of the Earth’s history is embraced by the geologic time scale?
A. evolution of life
B. formation of Earth
C. formation of universe
D. formation of the solar system
10. In what geological periods did trilobites and other early arthropods appear?
A. Cambrian
B. Devonian
C. Permian
D. Eocene
219
C. Paleozoic
D. Proterozoic
12. From the lists of divisions in the geologic time scale, which is considered as
the earliest?
A. Hadean
B. Archaean
C. Quaternary
D. Phanerozoic
13. Which of the following does NOT represent the geologic time scale?
A. the geologic history of universe
B. the fossil record of flora and fauna
C. the age of the Earth and its inhabitants
D. evolution of life dating back 4.6 billion years ago
14. What do you call the organism that is no longer existing on Earth?
A. extinct
B. petrified
C. fossilized
D. sedimentary
15. Which geological era marks its end with the disappearance of the
dinosaurs?
A. Precambrian
B. Mesozoic Era
C. Miocene Epoch
D. Tertiary Period
Earth history including its rock strata, the rock study, and discovery, as well as the
fossils, are engraved in one of the most important materials known as geologic
record. The geologic time scale is the “calendar” for events in Earth’s history.
The importance of Geologic time scale was, it serves as standard timeline used to
describe the age of rocks, fossils, and the events that formed them. A device which
is of great help to the science of geology owed to the explorations and studied made
by the geologists that were recorded.
220
The necessity of knowing how life began in the past, the events, and principles
behind the Earth’s history enable us to conform with the alterations or
consequences that we might encounter or experience in the near future. As a part
of the new generation, we should be appreciative and accept that all things that are
present in our time were the outcome of Earth’s history.
What’s In
In the previous lessons, you had learned that stratified rocks are products of
sedimentary process which include weathering and erosion of pre-existing rocks.
Wherein, these sediments will be transported by the agent of erosion such as water,
wind, or ice, and deposited in seas and acted upon by the process of compaction
and lithification. As time goes by, these sedimentary rocks will form layers or
stratification representing periods of deposition of sediments. Based on this, there
are several laws that governed stratigraphy as proposed by Nicolas Steno.
Nicolas Steno’s Law of Stratigraphy opens our eyes to the world of rock layers and
its formation. It also shows how endogenic and exogenic geological processes cause
alteration in rocks that lead to the formation and deformation of rock layers.
Let us find out if you can still recall how these laws are depicted in the rock strata.
Identify the law of stratigraphy the following diagrams represent.
A B
Guide questions:
1. What laws of stratigraphy does the picture in letter A tell us?
2. In picture B, new rocks were introduced. What law is best explained
in this kind of rock stratum?
3. How old is the rock that was intruded in stratum B?
4. What geologic processes existed in stratum B which causes its
deformation?
5. If you want to determine the age of the rocks in the rock layer, what
method are you going to use?
221
What’s New
Sequence Drill
In a sequential manner, make five to seven relative events that happened in your
life. For example, the day you were born, the day your brother or sister was born,
or your first date with your boyfriend or girlfriend. Write your answer in the table
below.
Time Scale
Relative Scale Absolute Scale
I was born I was born Example
(Jan.28,2001)
The way the relative events are arranged in your data is similar to how the geologists
studied the Earth’s history: its geological timescale of Earth’s age and how it is
determined.
What Is It
Since the beginning, geologists have been studying the Earth to unwrap the secrets
of the past. They have been analyzing rock samples gathered from different
continents in the world including its layers and its correlation with the fossils. This
helps in relating the sequence of events in the Earth’s history which is clearly
presented in the geologic time scale.
The geologic time scale is divided into a series of time intervals which are equal in
length. These time intervals are different from that of a clock. They are divided
according to the significant events in the history of Earth such as the mass
extinction of a large population of fauna and flora.
Holocene 0.01
Quaternary
Cenozoic Pleistocene 1.8
Pliocene 5.3
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Tertiary Miocene 23.0
Eocene 55.8
Paleocene 65.5
Cretaceous 145
Mesozoic
Jurassic 200
Triassic 251
Permian 299
Mississippian 359
Devonian 416
Silurian 444
Ordovician 488
Cambrian 542
bacteria and
Proterozoic blue green 2500
algae
Precambrian
The table represents the divisions of the geologic time in Earth’s history are
separated into eons, periods, and epochs. The Earth’s age which is 4.6 billion years
was separated into different span of time to handily indicate the events.
223
DIVISION IN THE GEOLOGIC TIME SCALE
EONS
are the longest portions in the geologic time.
Paleozoic Era
Hadean Eon It is the beginning of early
Few rocks were deformed life.
and metamorphosed. All of the continents had
come together to form the
Archaean Eon supercontinent called
Marine rocks contain Pangea.
fossil remains of It is characterized by rapid
microscopic algae and development of terrestrial
bacteria plants.
Devonian period is known
as the age of fishes.
Proterozoic Eon
rifting of the continental Mesozoic Era
crust It is also known as the
subsequent filling with Age of Dinosaurs.
sedimentary and volcanic Pangea rifted into
rocks Laurasia and
Gondwanaland.
Cenozoic Era
It is also known as the age
of recent life or age of
mammals.
It has the most complete
record of any era because
the rocks are more
accessible.
224
DIVISION OF THE CENOZOIC ERA
Cenozoic Era
There are three periods in this
era: Quaternary, Paleogene
and Neogene.
Quaternary Period
It is the most recent period.
It is also termed Anthropogene
period.
It is divided into two epochs:
Pleistocene and Holocene.
Holocene - when human
civilization arose.
Scientists first developed the geologic time scale by studying rock layers and index
fossils. The information gathered by the scientists placed the Earth rock strata in
order by relative age. Geologic time is often discussed in two forms: relative time
and the absolute time.
Relative time is a subdivision of the Earth’s geology in a specific order based upon
the relative age relationships (commonly, vertical or stratigraphic position). These
relative time can be established usually on the basis of fossils. On the other hand,
absolute time refers to the numerical ages in millions of years or some other
measurement. These are obtained by radioactive dating methods performed on
appropriate rocks.
Relative time can be referred to as its physical aspects found in rocks while the
absolute time refers to the measurements taken upon those to determine the actual
time it expired. The time scale is depicted in its traditional form with the oldest at
the bottom and the youngest at the top.
225
What’s More
Activity 1.1 It’s a Date
1. Fill in the data table to show the number of millions of years each era lasted
based on relative and absolute dating. Choose your answer from the given
choices below.
a. 4.048 mya c. 299 mya e. 4,600mya
b. 69 mya d. 184mya
The Divisions of Percent Millions of years
Geologic Time
The Age of the Earth 100%
A. Cenozoic Era 1.5%
B. Mesozoic Era 4%
C. Paleozoic Era 6.5%
D. Precambrian Time 88%
Guide Questions:
Complete the timeline of the geologic time scale starting from the oldest to recent
time. Indicate each division and year.Use the data table in Activity 1.1 as reference.
1 2 3 4 5
6 7 8 9 10
Identify the term being described by the given statement.Select your answer from
the word pool below.
226
_____________1. It is where all traces of history of earth is recorded in rocks that
make up the crust.
_____________ 2. It is a way on how the age of rocks and fossils can be determined
by its numeric value.
_____________ 3. It is the largest division in the geologic time scale.
_____________ 4. It refers to the rocks that are deposited and used in dating method.
_____________ 5. It is used to determine the geological events in rock strata.
_____________ 6. It refers to prominent reptiles that evolved during Mesozoic Era.
_____________ 7. The fitting of supercontinent Pangea happened in this era.
_____________ 8. The present human evolved during this age.
_____________ 9. It refers to the age of the fishes.
_____________ 10. Ancient bacteria and blue green algae existed during this age.
227
Things to Ponder
Geologic time scale is a timeline that illustrates Earth’s past.
Geologic time scale describes the order of duration of major events on Earth for
the last 4.6 billion years.
Geologic time scale was developed after the scientist observed changes in the
fossils and rocks going from oldest to youngest sedimentary rocks.
Geologic time scale was divided into four divisions which include the Eons, Era,
Period, and Epoch.
Eons is the largest division in the geologic time scale.
Relative dating or age is the order of the rocks from oldest to youngest.
Relative dating does not determine the exact age of rock or fossils but does learn
which one is older or younger than the other.
Relative age of rocks based on the order gives its physical division in the geologic
time scale.
Absolute dating or age measures the amount of radioactive elements in rocks to
give the ages to each division of time in the geologic time scale.
Absolute time refers to the numerical ages in millions of years or some other
measurement.
What I Can Do
Make a diary noting the important events that happened in your life for the day
which you can associate with the geologic time scale.
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
228
Assessment
Directions: Read each statement and choose the letter of the correct answer. Shade
the circle that corresponds to the correct answer.
3. What do you call the method of placing geologic events in sequential order
as determined by their position in the rock record?
A. correlation
B. uniformitarianism
C. relative dating
D. absolute dating
7. Which of the following era is sometimes called “the age of fish” or “ancient
life”?
A. Cenozoic
B. Mesozoic
229
C. Paleozoic
D. Precambrian
8. What will be the sequence of division in the geologic time scale, if the order
of position is from shortest to longest?
A. era, period, epoch
B. epoch, period, era
C. period, epoch, era
D. epoch, era, period
10. In which division in the geologic time scale did the continents come together
to form the supercontinent called Pangaea?
A. Paleozoic Era
B. Cenozoic Era
C. Triassic Period
D. Jurassic Period
12. Which epoch in the geologic time scale represents human lives in a very
short period of time?
A. Eocene
B. Pliocene
C. Holocene
D. Pleistocene
13. Why are fossils recorded in the geologic time scale said to be incomplete?
14. In what way does the geologic time scale place Earth’s rock in order?
A. by composition
B. by relative dating
230
C. by absolute dating
D. by decades and centuries
15, What makes fossil essential to the scientists and to the history of the Earth?
A. It analyzes the composition of sedimentary rock
B. It predicts what organisms will become extinct.
C. It describes the history of past life and environment.
D. It presents temperature of the oceans in different depths.
Additional Activities
Create your own representation of geologic time scale on rocks indicating the
relative and absolute dating. Use discarded material in your output.
231
Week
What I Know
Choose the letter of the best answer. Write the chosen letter on a separate
sheet of paper.
2. What do you call the remains or evidence used as markers when building up
the geologic time scale?
A. fossil
B. minerals
C. sandstone
D. piles of rock
235
3. Why do most of the eons and eras end in “zoic”?
A. because these time periods were recognized by the plants present at
that time
B. because these time periods were recognized by the animal life present
at that time
C. A and B
D. none of the above
5. What do you call the person who studies fossils and ancient life?
A. biologist
B. archeologist
C. anthropologist
D. paleontologist
6. What do you call the process by which the remains of ancient living things
are turned into rock?
A. fertilization
B. fossilization
C. fragmentation
D. metamorphosis
7. How were the scientists able to arrange the fossils they gathered?
A. They were able to arrange the fossils according to age.
B. They were able to arrange the fossils according to structure.
C. They were able to arrange the fossils according to chemical content.
D. They were able to arrange the fossils according to place of discovery.
8. In this era, the rocks formed have fossils of animals and plants such as
dinosaurs, mammals and trees.
A. Cenozoic Era
B. Mesozoic Era
C. Paleozoic Era
D. Phanerozoic Era
9. In what era did the first skeletal elements, soft-bodies metazoans, and animal
traces exist?
A. Cenozoic Era
B. Mesozoic Era
C. Paleozoic Era
D. Late Proterozoic
236
10. In this period, the first mammals and dinosaurs existed.
A. Cretaceous
B. Permian
C. Jurassic
D. Triassic
11. In Paleozoic Era, in what period did the first vascular land planet exist?
A. Cambrian
B. Devonian
C. Silurian
D. Ordovician
12. These marine animals lived inside their shells, taking up the whole inside of
the long shell.
A. echinoderms
B. gastropods
C. mollusks
D. Sea arthropods
14. These were marine arthropods and were made of chitin, like some insects
and other organisms like lobsters.
A. crinoids
B. trilobites
C. fossil clam
D. gastropods
15. These marine animals are bivalves with two symmetrical shells – the shells
are mirror images of each other.
A. crinoids
B. trilobites
C. fossil clam
D. gastropods
237
Lesson 1 Geologic Timeline
Fossils are the remains or evidence of prehistoric plants and animals that have
fossilized. Fossils were used as markers when building up the geologic time scale.
The names of most of the eons and eras end in “zoic”, because these time periods
were recognized by the animal life present at the time. Rocks formed during the
Proterozoic Eon have fossil evidence of simple organisms, such as bacteria, algae,
and wormlike animals. In the Phanerozoic Eon, the rocks formed have fossils of
animals and plants such as dinosaurs, mammals, and trees.
And with that, geologists have developed the geological time scale, which divides the
Earth’s history into eons that are subdivided into eras, which are further divided
into periods and then into epochs. The geologic time scale is the “calendar” for
events in Earth’s history. It subdivides all time since the end of the Earth’s formative
period as a planet (nearly 4 billion years ago) into named units of abstract time: in
descending order of duration, which are eons, eras, periods and epochs.
The geologic time scale provides a system of chronologic measurement relating
stratigraphy to time that is used by geologists, paleontologists and other Earth
scientists to describe the timing and relationships between events that have
occurred during the history of the Earth. The detailed studies made of rocks
throughout the world have allowed geologists to correlate rock units globally, and
break them into time units. The result is the Geologic Time Scale, usually presented
in a chart like form with the oldest event and time unit at the bottom and the
youngest at the top.
What’s In
Activity 1
Review the vocabulary words and complete the activity on the other side of this
worksheet.
1. Fossils – remains of ancient life that have been turned to stone
2. Body Fossils – actual parts of plants and animals that have been turned to
stone (i.e. bone, shells, leaves)
3. Coprolite – fossilized dinosaur dung (scat)
4. Fossilization – process by which the remains of ancient living things are
turned to rock
5. Paleontologist – a scientist who studies fossils and ancient life
6. Sedimentary Rock – rock made of layers of tightly packed sand and clay
7. Sandstone – a type of sedimentary rock that is made of sand
8. Trace Fossil – a fossilized sign that a plant or animal once lived in an area
(i.e. footprints, coprolite)
238
9. Porous – full of tiny holes that water, air, and light can pass through
10. Mineralization – to convert into a mineral substance; to fill with a mineral
substance
239
Activity 2: Find Me
Directions. Encircle the 8 words listed below. Words may appear straight across,
back-word straight across, up, and down.
COPROLITE PALEONTOLOGIST
FOSSILS MINERALIZATION
SEDIMENTARY SANDSTONE
FOSSILIZATION POROUS
L N O I T A Z I L A R E N I M
S T S I G O L O T N O E L A P
E K B K S D Z U I L I H K M F
D C L T J Q L W O G B M I N O
I Y E I N M P Q R K J P A T S
M F P D L S A N D S T O N E S
E R O I M I X Y U E R J P J I
N D K S Z R F Z T J A X T Q L
T E B P S M E I L W B P I Y I
A Q V Y E I L X V Y O F Q V Z
R Z I K F O L P M R A M R G A
Y C V W R H R Y O K V F I L T
M L S P Q U N U P I P W E H I
T V O F M B S A R T F N F B O
N C G Z U R N L O N I H O A N
240
Activity 3: Let’s Trace
Look and analyze at the illustration below and answer the question listed below.
241
2. For what percentage of time has life existed on Earth (round to the
nearest whole number)?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
3. For about how many years of geological time have humans existed on
Earth?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
4. For about how many years of geological time have the dinosaurs existed
on Earth?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
242
What’s New
Imagine you are hiking in the woods. As you walk up a steep hill, you find a fossil.
It is a mold of many tiny seashells. What would seashells be doing in the middle of
the woods?
Most fossils are found in sedimentary rocks. These rocks form on the surface of the
earth. They record the processes that have happened on the surface, including life.
Scientists are able to arrange fossils according to age. This is called the fossil record.
By studying the fossil record, scientists have found that the earth and its life forms
have gone through many changes in the past.
Fossils have taught us how and when rock layers have formed. They have also
helped scientists learn about life forms that have come and gone. Fossils have even
taught us about the climate of the earth long ago.
The Geologic Time Scale is divided into huge blocks of time called eras. Eras are
defined by major changes in the fossils found in the sedimentary rock layers that
were formed during those time spans.
Activity 4
Directions: Read the story entitled “The Story of Fossil” by Patti Hutchison. Answer
the guide questions stated below.
3. How did fossils help and teach scientist about the history of the earth?
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
4. Aside from geological aspect, what other aspects can be predicted by guide
fossils? How? (climatic, organismic etc.)
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
243
What is It
Activity 5
Read and analyze the statements below. Write T if the statement is TRUE and F if
the statement is FALSE.
_______ 1. Scientists determine when an era begins and when it ends through
geological timeline.
_______ 2. Dinosaurs exist at the same time as humans.
_______ 3. The purpose of making a geological timeline is to identify age of
organism through its fossils.
_______ 4. Quaternary period of geological time has humans evolved on Earth.
_______ 5. Triassic Period of geological time have the dinosaurs existed on
Earth.
What’s More
Activity 6
Directions: Write the division and period of the listed organism below. Refer to
geological time scale.
Era Period
1. first vascular land plants ____________ ____________
2. jawed fish diversity ____________ ____________
3. evolution of humans ____________ ____________
4. first chordates ____________ ____________
5. mammals diversify ____________ ____________
6. first primates ____________ ____________
7. dinosaurs’ diversity ____________ ____________
8. major extinctions of reptiles’ diversity ____________ ____________
9. sudden diversification of metazoan families ____________ ____________
10. first flowering plants ____________ ____________
244
Activity 7: Crossword Puzzle
Directions. Complete the crossword by filling in the word that describes each clue.
Across:
Down:
245
What I Have Learned
Fill in the blanks. Read and analyze the statements below. Write the word that will
complete the sentence/paragraph.
246
What I Can Do
Activity 7
There are tables of fossils presented below. In the first box, choose an example and
draw its physical structure. Second box and third box are references that serve as
your guide to choose what organism you prefer to draw. Check the example. Good
luck!
Example:
Braching Tabulate Coral Branching Tabulate
Age: Devonian Coral is a marine animal.
(approximately 416 to Corals are multicellular
359 million years ago) organisms that often live
Class: Anthozoa in colonies. The
Moden Relatives: Corals individual animal is
still exists today. called a polyp. There are
many different species of
coral, with different
forms, shapes, and sizes.
247
2. Crinoid Crinoids were marine
Age: Devonian animals. Its name means
(approximately 416 to “Lily”. It is in the same
359 million years ago) phylum (Echinoderm) as
Phylum: Echinoderm starfish and sea urchins.
Modern Relatives: Crinoids ate by filtering food
Starfish, sea urchins out of the water with it arms.
and sea cucumbers Its mouth and anus were
next to each other in the
calyx. It “rooted” in place
with a holdfast. When
crinoids die, their stems
quickly break apart. The
most common fossils of
crinoids are the stem which
is sometimes broken into
little “cheerio” like pieces.
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Assessment
Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. These marine animals are bivalves with two symmetrical shells – the shells
are mirror images of each other.
A. crinoids
B. trilobites
C. fossil clam
D. gastropods
2. How were the scientists able to arrange the fossils they gathered?
A. They were able to arrange the fossils according to age.
B. They were able to arrange the fossils according to structure.
C. They were able to arrange the fossils according to chemical content.
D. They were able to arrange the fossils according to place of discovery.
3. These were marine arthropods and were made of chitin, like some insects
and other organisms like lobsters.
A. crinoids
B. trilobites
C. fossil clam
D. gastropods
4. What do you call the process by which the remains of ancient living things
are turned into rock?
A. fertilization
B. fossilization
C. fragmentation
D. metamorphosis
6. What do you call the person who studies fossils and ancient life?
A. biologist
B. archeologist
C. anthropologist
D. paleontologist
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7. These marine animals lived inside their shells, taking up the whole inside of
the long shell.
A. sea arthropods
B. echinoderms
C. gastropods
D. mollusks
9. In Paleozoic Era, in what period did the first vascular land planet exist?
A. Silurian
B. Cambrian
C. Devonian
D. Ordovician
12. What do you call the remains or evidence used as markers when building up
the geologic time scale?
A. fossil
B. minerals
C. sandstone
D. piles of rock
13. In what era did the first skeletal elements, soft-bodies metazoans and animal
traces exist?
A. Cenozoic Era
B. Mesozoic Era
C. Paleozoic Era
D. Late Proterozoic
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14. Which of the following does NOT belong to Paleozoic Era?
A. Cambrian
B. Devonian
C. Silurian
D. Jurassic
15. In this era, the rocks formed have fossils of animals and plants such as
dinosaurs, mammals and trees.
A. Cenozoic Era
B. Mesozoic Era
C. Paleozoic Era
D. Phanerozoic Era
Additional Activities
Do you think that the average annual global temperature and carbon dioxide levels
have been consistent throughout the history of earth? Justify your answer.
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Week
In this module, we will describe the geologic processes and hazards happening in the
community. Geologic processes like earthquake, volcanic eruption, and landslides
lead to different hazards. A hazard refers to a potentially damaging physical event,
phenomenon or human activity that may cause the loss of life or injury, property
damage, social and economic disruption or environmental degradation. Hazards are
extreme natural events with a certain degree of probability of having adverse
consequences.
What I Know
Directions: Read each statement and choose the letter of the correct answer. Write
the chosen letter on a separate sheet of paper.
3. What do you call the hazard where giant waves move at speeds of up
To 500 miles an hour and reach heights of hundreds of feet?
A. ground shaking C. liquefaction
B. landslides D. tsunami
255
4. What is the process during earthquake shaking where sand and silt
grains in wet soil are rearranged and the water in the spaces between
the grains is squeezed?
A. ground shaking C. liquefaction
B. landslides D. tsunami
7. What natural hazard has the effects of reshaping new land, debris
avalanche, destroyed forests, and death to many animals?
A. volcanic eruption C. earthquake
B. hurricane D. tsunami
256
14. Which of the following is true of a landslide?
A. A landslide is a mass movement of rock fragments, soil, and
debris downslope.
B. A landslide is associated with a volcanic eruption.
C. If debris from a landslide mixes with water, it will break apart
and stop flowing.
D. All of the answers are true.
A geologic hazard is an extreme natural event in the crust of the earth that
poses a threat to life and property, for example, earthquakes, volcanic
eruptions, tsunamis (tidal waves) and landslides. It is a large-scale, complex
natural events that happen on land. These hazards can cause immense
damage, loss of property, and sometimes life. Geologic hazards can play a
significant role when infrastructure is constructed in their presence. The
unpredictable nature of natural geologic hazards makes identifying,
evaluating, and mitigating against them a unique challenge.
257
Activity 1: Arrange Me
What do you see in the pictures below?
Following each picture are rumbled letters for you to rearrange. You may
arrange them now by writing the letter in the box provided.
K I G N N R U O D H A S G
A M T S N U I
258
Q L E F A T I O C N I
N A S L D E S I D L
259
Activity 2: Draw Me
Based from your drawing, can you name five (5) geologic hazards posed by
an erupting volcano? Write your answer in the table below.
Hazards Posed by an Erupting Volcano
1.
2.
3.
4.
5.
260
What is It
Geologic processes and hazards are events which occur irregularly in time and
space and cause negative impact on man and the environment. Earthquakes,
volcanic eruptions, tsunamis (tidal waves), and landslides are the geologic hazards.
Earthquake is one of the most violent natural phenomena. According to the number
of victims and destructive force, it exceeds all other natural disasters. Earthquakes
also happen under the ocean and can cause tsunamis.
Earthquakes and volcanic eruption can trigger landslides, especially in areas with
water saturated soils, a common characteristic of Cascadia. Landslides may result
in falling rocks and debris that collide with people, buildings, and vehicles.
There were earthquakes that happened in the Philippines which were noticeably
strong such as magnitude 6.9 in October 2019 which hit southern Philippines.
Another one was 6.1 magnitude that struck the Island of Luzon in April of 2019.
Recently, multiple earthquakes were felt when Taal Volcano erupted early in 2020.
261
Probably, you will feel shaking of your body and even the entire surroundings which
causes the ground shaking.
B. Surface faulting is displacement that reaches the earth's surface during slip
along a fault. It commonly occurs with shallow earthquakes; those with an
epicenter less than 20 km. Surface faulting also may accompany aseismic
creep or natural or man-induced subsidence.
D. Liquefaction describes the way in which soil liquefies during ground shaking.
Liquefaction can undermine the foundations and supports of buildings,
bridges, pipelines, and roads, causing them to sink into the ground, collapse,
or dissolve.
Volcanoes can be exciting and fascinating, but are also very dangerous. Any kind of
volcano can create harmful or deadly phenomena, whether during an eruption or a
period of dormancy. Volcanoes are natural systems and always have some element
of unpredictability.
262
A. Tephra consists of pyroclastic fragments of any size and origin. It is a synonym
for "pyroclastic material." Tephra ranges in size from ash (<2 mm) to lapilli (2-
64 mm) to blocks and bombs (>64 mm).
B. A pyroclastic flow is a dense, fast-moving flow of solidified lava pieces, volcanic
ash, and hot gases. Pyroclastic flows form in various ways. A common cause
is when the column of lava, ash, and gases expelled from a volcano during an
eruption loses its upward momentum and falls back to the ground. Another
cause is when volcanic material expelled during an eruption immediately
begins moving down the sides of the volcano. Pyroclastic flows can also form
when a lava dome or lava flow becomes too steep and collapses.
C. Lahar is an Indonesian term that describes a hot or cold mixture of water and
rock fragments that flows down the slopes of a volcano and typically enters a
river valley. Lahars are extremely dangerous especially to those living in valley
areas near a volcano. Lahars can bury and destroy manmade structures
including roads and bridges.
D. A flood is an overflow of water that submerges land that is usually dry. Floods
can look very different because flooding covers anything from a few inches of
water to several feet.
E. Lava domes are formed by viscous magma being erupted effusively onto the
surface and then piling up around the vent. Like lava flows, they typically do
not have enough gas or pressure to erupt explosively, although they may
sometimes be preceded or followed by explosive activity. The shape and size of
lava domes varies greatly, but they are typically steep-sided and thick.
F. Poisonous gases, the gases that are released during a volcanic eruption, come
from deep within the Earth. The largest portion of gases released into the
atmosphere is water vapor.
The Philippines has suffered from an inexhaustible number of deadly typhoons,
earthquakes, volcanic eruptions and other natural disasters. This is due to its
location along the Ring of Fire, or typhoon belt – a large Pacific Ocean region where
many of Earth’s volcanic eruptions and earthquakes occur.
Taal Volcano, on the island of Luzon in the Philippines, is the country's second most
active volcano. It boomed to life on January 12,2020, Sunday afternoon, spilling
volcanic ash. Taal Volcano sent a massive plume of ash and steam spewing miles
into the sky and pushed red-hot lava out of its crater, prompting the evacuation of
thousands of people and the closure of Manila's airport. Hundreds of earthquakes
were noted while the volcano was erupting. Flashes of lightning lit up the plume,
lending the scene an otherworldly appearance.
263
Activity 3. Check Me Out
1. In the table below, put a check on the hazards that you have experienced in
your locality. Then, explain why these hazards happened to our country.
2. Why is the Philippines prone to geologic hazard? Write your answer on the
space below.
Activity 4: List Me In
Identify and list down the hazards using published resources and personal
observation. Write your answer in the table below.
2.
3.
4.
5.
6.
7.
8.
9.
10.
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What I Have Learned
5.1 The table below showed places where potential hazards may occur. Write the
possible hazards for the given places.
1. 1.
2. 2.
3. 3.
4. 4.
5. 5.
Guide Questions:
1. What will you do if you are: a.) in the classroom or corridor, b) on the
territory surrounding the school, c.) in the school building and d.) in
the settlement when an earthquake happens?
2. Which places are the most dangerous?
3. Whose instructions should you follow? What should you do if you are
alone?
4. It might happen that your family members are not nearby. Who
should you call to receive help after an earthquake? Do you know the
telephone numbers?
265
What I Can Do
Hazards may pose danger to our lives. Let us be prepared and protect ourselves. As
students, how are you going to protect your lives in times of hazards? In the table
below, write a step by step procedure of preparing and protecting yourselves in times
of geologic hazards.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Assessment
Directions: Read each statement and choose the letter of the correct answer. Write
your answer on a separate sheet of paper.
1. Which of the following may result in falling rocks and debris that collide with
people, buildings, and vehicles?
A. earthquake C. tsunami
B. land slide D. typhoons
266
2. Which of the following is NOT a volcanic hazard?
A. flooding C. lava
B. lahars D. pyroclastic flows
3. Which of the following is an example of a hazard associated with
earthquake?
A. eutrophication C. flooding
B. ground shaking D. pyroclastic density currents
4. What is the main reason why the Philippines has suffered from numerous
geologic processes and calamities?
A. its economic status
B. its location (Ring of fire)
C. Philippines is 3rd a world country
D. something to do with human population
10. What do you call this hazard which involves the giant waves which can
move at speeds of up to 500 miles an hour and reach heights of hundreds
of feet? at s
A. ground shaking C. landslides
B. liquefaction D. tsunami
11. Which of the following describes the vibration of the ground during an
earthquake?
A. ground shaking C. landslides
B. liquefaction D. tsunami
267
12. What natural hazard has the effects of reshaping new land, debris
avalanche, destroyed forests, and death to many animals?
A. volcanic eruption C. hurricane
B. earthquake D. tsunami
14. What is the process during earthquake shaking where sand and silt
grains in wet soil are rearranged, and the water in the spaces between
the grains is squeezed?
A. ground shaking C. liquefaction
B. landslides D. tsunami
15. What refers to the sliding down of a mass of earth or rock from a
mountain or cliff?
Additional Activities
List down the several geologic hazards that happened in our country and
explain how these affect the people and the environment.
268
Week
What I Know
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
3. What do you call the point of origin of an earthquake located just above the
focus?
A. divergent C. epicenter
B. convergent D. transform
4. Which type of map shows the risk of particular area to certain threat?
A. hazard C. resource
B. physical D. topographic
5. What type of hazard is climate and weather related?
A. natural C. ergonomic
B. biological D. anthropogenic
272
6. What refers to the movement of rock, debris, and soil down a slope?
A. tsunami C. typhoon
B. landslide D. volcanic eruption
7. Which of the following geologic features makes the provinces of La Union and
Pangasinan high risk to earthquakes?
A. Iba Fault C. Tablas Fault
B. Manila Trench D. Lianga Fault
11. Which of the following areas has the HIGHEST risk of volcanic-related
disaster?
A. Sulu C. Bataan
B. Albay D. Biliran
14. Which of the following factors makes the province of Benguet at risk to
earthquake?
A. high population C. bodies of water around
B. presence of trees D. topography and mountains
15. Why do you think the Visayas islands are NOT at risk to earthquakes? Due
to
A. lack of fault lines C. lack of mountains
B. the presence of islands D. the presence of plains
273
Lesson 2 Geological Processes and
Hazards
The Philippines is an archipelagoo that is made up of 7641 islands and home to
world-renown natural wonders and pristine water bodies. The country is in a unique
location because it rests in the Pacific Typhoon Belt and Pacific’s earthquake and
volcano Ring of Fire. The Ring of Fire is a home to over 75% of the world’s active and
dormant volcanoes. Because of its geographic location, the Philippines is among the
greatest hazard and disaster-prone countries in the world.
What’s In
The Philippines is no stranger to natural hazards. Every year, thousands to millions
of Filipinos are extremely affected by all forms of hazards such as earthquakes,
typhoons, and volcanic eruptions. These natural hazards may result in multiple
disasters.
What’s New
Geologic Process
Geological processes can be described as natural forces that shape the physical
makeup of a planet. These forces cause movements of plates in the Earth’s crust, the
area where humankind lives. As this processes occur from time to time, it poses
continuous source of hazards to people, community and society.
Hazards
A hazard is a phenomenon caused by natural or human forces which poses threat to
humans, animals, properties and environment. For instance, since the Philippines is
located within the Ring of Fire, the country experiences many earthquakes and
274
volcanic eruptions compared to other countries. Making the country one of the most
hazard-prone countries in the world.
Hazard Map
It is a map that illustrates the areas that are exposed or prone to a particular
hazard. They are used for natural hazards such as landslides, flooding, volcanic
eruption and tsunami. It is also used to mitigate the potential negative effects of
these hazards
Activity 2: Point me
Every year, dozens of natural disasters strike our country. Some are just passing by
and some even make history because of massive destruction.
Earthquakes
1.
2.
Volcanic Eruptions
1.
2.
Landslides
1.
2.
What is It
Now, you have learned that geologic location is the major reason why the Philippines
is a hazard-prone country. The Philippine government partnered other private
institutions to reduce the risk of hazards through producing hazard maps that are
publicly available. For example, the partnership of news networks with the Philippine
Institute of Volcanology and Seismology (PHIVOLCS). This partnership shares
valuable and scientific information which increases the public’s understanding on
geologic hazards and risks associated with it.
275
Another is Manila Observatory, a private non-stock and non-profit research
institution with the help of the Department of Environment and Natural Resources
(DENR. This partnership produced hazard maps that show vulnerability of the
country to environmental disasters.
Geophysical map
276
First on the rank with the highest risk is
Camiguin because the land area was so small. If
volcanic eruption may occur, the whole province can
be affected. Sulu ranks second because it has the
greatest number of active and dangerous volcanoes.
(Center for Environmental Geomatics- Manila
Observatory, 2005)
277
What’s More
Activity 3: Identify me
Directions. Using the hazard map found on the previous pages, answer the
following questions.
1. Identify the top 3 places in the Philippines that are hazard-prone to volcanic
eruptions, earthquakes, and landslides. Justify your answers why they are
most prone.
2. What is the importance of using a hazard map?
What I Can Do
Activity 5: Hazard identification
Directions. Identify hazardous places during or after earthquakes on the following
locations.
1. Home
2. Classroom and school building
3. Community (e.g. barangay, municipality or provinces)
278
Assessment
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
4. Which of the following geologic features makes the provinces of La Union and
Pangasinan pare at risk to earthquakes?
A. Iba Fault C. Tablas Fault
B. Manila Trench D. Lianga Fault
5. Which of the following provinces has the highest risk of volcanic eruptions
based on DENR and Manila observatory report?
A. Bataan D. Sorsogon
B. Laguna D. Camiguin
6. Which of the following is NOT among the provinces with high proneness to
landslide?
A. Cebu C. La Union
B. Metro Manila D. Mountain province
279
11. Where can you find the Ring of Fire?
A. Arctic Ocean C. Pacific Ocean
B. Indian Ocean D. Atlantic Ocean
13. What refers to the movement of rock, debris, and soil down a slope?
A. landslide C. typhoon
B. earthquakes D. volcanic eruptions
14. Why do you think that majority of the Cordillera Administrative Region are
included in the most landslide prone provinces in the Philippines? Because it
is
A. near from the sea C. near in mountain ranges
B. situated near active volcanoes D. near NCR
Additional Activities
Activity 6: Interview me
Directions. Interview a family member, a relative, neighbor or anyone who
experienced geologic hazards and answer the following questions below.
1. Have you ever experienced any form of geologic hazards such as volcanic
eruptions, earthquakes, and landslides? How did you feel? What did you do
during and after the situation?
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
2. If you have never experienced any form of hazards, look for someone who was
able to witness and experience it first-hand. Ask them their feelings and
thoughts during and after the hazard event. Also, ask them the things they
did during and after the scenario.
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
280
Week
What I Know
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
2. Which among the following human activities DOES NOT speed up or trigger
landslide?
A. mining C. overloading slopes
B. planting of trees D. excavation or displacement of rock
284
4. What refers to the exposure, processing and recording of archaeological
remains?
A. mining C. quarrying
B. excavation D. land pollution
5. What do you call the human activity that trigger landslides using explosives?
A. land use C. mining
B. quarrying D. excavation
10. Which among the following can trigger a landslide even if there is no human
activity present in an area?
A. gravity C. lighting
B. thunder D. forest fire
285
12. Which among the following factors contributed MOST in a landslide during
quarrying?
A. blasting of rocks C. use of heavy equipment
B. polluting the rivers D. use of a variety of manpower
14. How can a community avoid the occurrence of a landslide in the future?
A. avoid creating loud noises C. plant more trees in the slope
B. call the emergency hotline D. construct more buildings
15. Which among the following human activities can trigger a landslide?
I. musical concert
II. building being demolished
III. woman dancing on top of a pole
IV. team of construction workers clearing trees for a new road
286
What’s In
Activity 1: Loop Me In
What are the human activities that speed up or trigger landslides? Can you name
some?
Directions. Encircle the word or group of words that speed up or trigger landslides
O O L A N D U S E E
C V G R G S V L X S
U E E U R T W O P N
T G X R L C X P L O
T N C H H O Y E O I
I I A I F N A S S T
N N V B K S Z D I A
G I A K L T R H V V
T M T L O R E V E A
R O I M P U S I S C
E R O O Q C T J T X
E E N N R T U M R E
What’s New
Landslide is an occurrence in which soil, rocks and vegetal debris are
transported suddenly or slowly down a slope due to insufficient stability. It
may happen when there is continuous rainfall, earthquakes and/or volcanic
eruption accompanied by a very loud noise
287
Below is an image of landslide due to human activities:
Listed below are some of the human activities that speed up or trigger landslide:
a. Overloading slopes
b. Mining which uses explosives underground
c. Excavation or displacement of rocks.
d. Land use such as modification of slopes by construction of roads,
railways, buildings, houses, etc.
e. Quarrying which includes excavation or pit, open to the air, from which
building stone, slate, or the like is obtained by cutting, blasting, etc.
f. Land pollution which is the degradation of earth’s land surface,
exploitation of minerals and improper use of soil by inadequate
agricultural practices.
g. Excavation which pertains to exposure, processing, and recording of
archaeological remains
h. Cutting Trees that can lead to deforestation and may encourage
landslide
Due to these human activities, several effects of landslides were noted. These
cause property damage, injury and death and adversely affect a variety of resources.
For example, water supplies, fisheries, sewage disposal systems, forests, dams and
roadways can be affected for years after a slide event. The negative economic effects
of landslides include the cost to repair structures, loss of property value, disruption
of transportation routes, medical costs in the event of injury, and indirect costs such
as lost timber and lost fish stocks. Water availability, quantity and quality can be
affected by landslides. Geotechnical studies and engineering projects to assess and
stabilize potentially dangerous sites can be costly.
288
Are we prepared in case of landslides? These are some precautionary
measures to observe and follow in preparing for landslides:
a. Stay alert and awake. Many debris-flow fatalities occur when people are
sleeping.
b. If you are in areas susceptible to landslides and debris flows, consider
leaving if it is safe to do so.
c. Listen for any unusual sounds that might indicate moving debris, such as
trees cracking or boulders knocking together.
d. If you are near a stream or channel, be alert for any sudden increase or
decrease in water flow and for a change from clear to muddy water.
e. Be especially alert when driving. Bridges may be washed out, and culverts
overtop.
f. Be aware that strong shaking from earthquakes can induce or intensify
the effects of landslides.
What is It
Activity 2: List and Describe
Directions. On the box provided below, list down the human activities that cause
landslides. Describe each one how they contribute to the cause of such hazardous
event.
What’s More
Activity 3: Share It
Directions. Have you experienced landslide in your community? What are the
causes of such event? Share your experience. If not, kindly interview a person who
has a first-hand experience to landslides and ask his feelings, thoughts and actions
toward the event.
__________________________________________________________________________________
__________________________________________________________________________________
289
Neatness of output 5 points
Organization 5 points
TOTAL 20 points
What I Can Do
Activity 5: My Share
Directions. People must be mindful and careful enough doing activities that may
lead to occurrence of landslides. As a student, how will you do your part in preventing
landslides as to information dissemination, awareness and mitigation planning?
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
_________
290
Assessment
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
10. Which among the following can trigger a landslide even if there is no human
activity present in an area?
A. gravity C. lighting
B. thunder D. forest fire
291
11. How does a deforestation speed up landslide?
A. due to the planting trees
B. due to the cutting of trees
C. catching of wild animals
D. increasing the human population
12. Which among the following factors contributed MOST in a landslide during
land pollution?
A. blasting of rocks C. use of heavy equipment
B. improper use of soil D. use of a variety of manpower
14. Which among the following human activities can trigger a landslide?
I. building being demolished
II. musical concert
III. team of construction workers clearing trees for a new road
IV. woman dancing on top of a pole
15. How can a community avoid the occurrence of a landslide in the future?
A. avoid creating loud noises C. plant more trees in the slope
B. call the emergency hotline D. construct more buildings
Additional Activities
Directions. Look for a news article concerning the occurrence of landslide. Identify
the following elements in the news article:
Title: ____________________________________________________________
Author: ____________________________________________________________
Basic Information:
What? ____________________________________________________________
Who? ____________________________________________________________
When? ____________________________________________________________
Where? ____________________________________________________________
292
Why? ____________________________________________________________
How? ____________________________________________________________
If you are in the position of the authorities, youth leaders or community members,
what preventive measures will you implement to address the problems presented in
the article?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
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Week
8
What I Need to Know
This module was designed and written with you in mind. It is here to help you master
the nature of Earth and Life Science. The scope of this module permits it to be used
in many different learning situations. The language used recognizes the diverse
vocabulary level of students. The lessons are arranged to follow the standard
sequence of the course. But the order in which you read them can be changed to
correspond with the textbook you are now using.
The module has one lesson:
Lesson 1 – Hydrometeorological Phenomena and Hazards
What I Know
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
1. What is the highest signal number can be found on PAG-ASA’s revised storm
earning system?
A. 3 C. 7
B. 5 D. 9
2. What is the English term for bagyo?
A. storm C. thunderstorm
B. typhoon D. tropical depression
3. Which of the following is NOT included in the group?
A. flood C. typhoon
B. tornado D. tsunami
4. What is described as the region of the calmest weather at the center of
tropical cyclone?
A. eye C. eye wall
B. inner bands D. epicenter
5. What do you call to the cyclones occurring in the North Atlantic Ocean?
A. typhoon C. hurricanes
B. tornado D. thunderstorm
297
6. When does the Southwest Monsoon usually occur in the Philippines?
A. March - May C. October - March
B. July - December D. June – September
10. Which region in the Philippines is the most exposed to tropical cyclones?
A. Region I C. Region III
B. Region V D. Region XI
11. Which of the following reasons makes Pampanga the province that is most
prone to flood?
A. low lying area C. facing towards the sea
B. highly populated D. composed of mountains
12. Which of the following places of is LEAST likely at risk for typhoon?
C. Albay C. Batangas
D. Cagayan D. Sorsogon
14. If you would like to settle to a province that is least prone to typhoon and
flood, which among the following provinces will be a good option?
A. Albay C. Maguindanao
B. Tarlac D. Negros Oriental
298
Lesson 3 Hydrometeorological Phenomena and
Hazards
The Philippines has a tropical and maritime climate. Annually, the country is visited
by an average of 20 typhoons, five to nine of which are highly destructive. The
Philippines is situated in the Pacific typhoon belt thus, the country is highly prone
to hydrometeorological hazards. Oftentimes, multiple hazards occur simultaneously.
What’s In
Previously, we learned that geologic processes cause different hazards such as
earthquakes, volcanic eruption and landslides. These has caused unimaginable
impact to people and their properties. Being situated in in the tropics, the Philippines
is found to be more exposed and vulnerable to hydrometeorological hazards
compared to other countries. Philippines is also a tropical country with only wet and
dry seasons.
Activity 1: Find Me
Directions. Locate and encircle words that are related to human activities that
speed up or trigger landslides. Terms can be found horizontally, vertically, diagonally
or even backward.
P M S H P O L L U T I O N P K
I N I E S J V Z W F R Q U I Y
H O X N P S U J Z C U T Z P O
G I O X Z O U H E L E J H V Z
I T M G K H L Q Z M N M E Q F
S A F I W B M S I Q E R E U R
L V M T S S W R V T L Z C A L
Z A T A X M F L C O Z T Y R N
I C Y L I K W U A A E I K R S
D X M N I E Q D O H N I H Y Y
J E O Z K E I F Y Y I E U I N
Y O A U C N T P I M I N I N G
U S S P G Q K C G D N A L G Q
E E W P G U X B Z X I D I V J
E K G Q M D Q S T G B U I W D
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What’s New
Activity 2: Decode Me
Directions. Presented below is a crossword puzzle. Using the jumbled letters as
clues, rearrange them to decipher a term that fits in the corresponding boxes
across and down.
Across Down
3. IOP-IPO 1. RHAZASD
5. CIATRLPO SELCONYC 2. OSOSONMN
6. DGTHRUO 4. KRIS
7. SLDFOO
What is It
Hydrometeorological hazards
They are brought by extreme meteorological and climate phenomena that includes
tropical cyclones, thunderstorms, tornado (ipo-ipo) drought, and floods.
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Tropical cyclones
Tropical cyclones are known in various names depending on the country where you
live. In the Western North Pacific around the Philippines, Japan, and China the
storms are known as typhoons, while in the North Atlantic Ocean and the Eastern
North Pacific they are referred to as hurricane. Here are the top five destructive
typhoons to ever hit the country: Typhoon Haiphong (1881), Typhoon Haiyan
(Yolanda) (2013), Tropical storm Thelma (Uring) (1991), Typhoon Bopha (Pablo)
(2012), and Typhoon Angela (1867).
Monsoons
A monsoon is a seasonal wind and rains pattern, and the word “monsoon” believed
to be originated from the Arabic word mawsim (season), via Portuguese and the
Dutch monsun. There are two known monsoons in the Philippines that occur every
year: Summer Southwest (Habagat) and Winter Northeast Monsoon (Amihan).
1. Amihan: brings cloudless skies and nippy mornings during the dry season
(October to late March)
2. Habagat: brings heavy rains and some deadly typhoons (June to September)
Floods
Flood is as an abnormal progressive rise in the water level of a stream that may result
in the over-flowing by the water of the normal confines of the stream. A flood can
vary in size, speed of water, and duration.
Tornado (Ipo-ipo)
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Northern Luzon, Southeastern
Luzon and Eastern Visayas are
the areas highly at risk to the
occurrence of tropical
depressions, tropical storms,
typhoons and super typhoons.
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What’s More
Activity 3: Identify me
Directions. Familiarize yourself with the hazard map from previous page and answer
the following questions.
1. Identify the places in the Philippines that are both prone to typhoons and
floods. Justify your answers.
2. What is the importance of using hazard map?
Directions. Read the following statements. Complete them by filling in the blanks
with the correct term or phrases.
1. Seasonal wind and rain pattern phenomena are referred as ___________.
2. In average, ____ typhoons visited Philippines every year.
3. In the Philippines, tropical cyclones are popularly known as ____________.
4. In 1988 the deadliest typhoon ever hit in the Philippines is __________.
5. The most flood-prone province in the Philippines is ______________.
1. Home
2. Classroom
3. Community (e.g. barangay, municipality or provinces)
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Assessment
Directions. Read the following questions and choose the letter of the correct answer.
Write your answer on a separate sheet of paper.
1. What is the name of the deadliest typhoon ever hit the Philippines in 1881?
A. Uring C. Angela
B. Thelma D. Haiphong
2. What monsoon brings cloudless skies and nippy mornings during the dry
season?
A. easterlies C. winter northeast
B. summer southwest D. low pressure area
4. Which of the following is the MOST exposed region in the country to tropical
cyclones?
A. Region I C. Region III
B. Region II D. Region IV
5. What ocean is located in the eastern part of the Philippines in which most
typhoons are originated?
A. Arctic C. Pacific
B. Indian D. Atlantic
8. What is the highest category in the typhoon warning signal system in the
Philippines?
A. 2 C. 4
B. 3 D. 5
9. What is the usual movement of typhoon that is coming from the Pacific Ocean?
A. northwest C. southern
B. southwest D. northern
10. Which among the following provinces has high risk to typhoons?
A. Albay C. Sorsogon
B. Masbate D. Pampanga
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11. Which among the following provinces has low risk in flood?
A. Tarlac C. Marinduque
B. Bulacan D. Maguindanao
13. Which of the following is MOST likely be affected by typhoon originated from
the West Philippine Sea and is moving northeast?
A. Albay C. Zamboanga
B. Palawan D. Negros Occidental
14. Why is the Philippines frequently visited by typhoon all year-round? Because
it is
A. highly populated C. located near the Pacific Ocean
B. composed mostly of islands D. near the western hemisphere
15. Samer would like to settle to a province that is LEAST prone to typhoon and
flood, which among the following provinces will be a good option?
A. Albay C. Palawan
B. Tarlac D. Pampanga
Additional Activities
Activity 6: Interview me
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
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Week
What I Know
Directions. Read the following questions and choose the letter of the best answer.
Write the chosen letter on a separate sheet of paper.
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4. Which of the following is NOT an example of ecosystem present in the marine
environment?
A. mangroves
B. seagrass
C. dipterocarps
D. coral reef
5. What can be attributed to the melting of the iceberg in the polar region?
A. rising temperature
B. ozone depletion
C. chemicals in the atmosphere
D. all of the above
6. What refers to the study of the processes associated with marine and coastal
ecosystem?
A. Biology
B. Chemistry
C. Oceanography
D. Physics
8. What refers to the rising of seawater due to pressure and wind associated with
a storm?
A. tides
B. crustal movement
C. storm surge
D. waves
10. What do you call the vibrations or shaking of the Earth’s surface caused by
the rapid movement of rocks in the crust?
A. shadow zones
B. earthquakes
C. tsunami
D. hot spot
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11. What do you call the most common feature formed by wave deposition?
A. stack
B. tombolo
C. beach
D. spit
12. Which of the following fields of science is concerned with the study of weather
and climate as well as the processes involved in it?
A. Hydrology
B. Marine Science
C. Meteorology
D. Limnology
14. These are caused by heavy and steady rains and poor drainage system in low-
lying areas.
A. drought
B. floods
C. cyclones
D. hurricane
Lesson 1 Processes
The coast is one of the most dynamic parts of the Earth’s surface. It contains some
of the world’s sensitive and threatened ecosystems such as mangroves and beach
forest, seagrass and coral reefs. The dynamics of the marine environment result to
different processes that affect human communities and organisms in the coastal
ecosystem. Some of these processes result to natural hazards.
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Marine systems are referred to as the world’s oceans while coastal systems refer to
the interface between oceans and land, extending seawards to about the middle of
the continental shelf and inland to include all areas strongly influenced by the oceans
(Millennium Ecosystem Assessment, 2005). About 23% of the world’s population live
within 100 km of the coast and about 10% live in extremely low-lying areas. Many of
these processes like coastal erosion, storm surges, coastal flooding, and tsunami.
What’s In
You have learned previously that marine systems are much broader compared to
coastal systems. Coastal processes are activities that regularly happen in the marine
ecosystem as influenced by the weather, climate and the adjacent landscape. Let us
check if you still remember the different marine and coastal processes through this
review.
Directions. Rearrange the jumbled letters and identify the term being referred to in
each of the following items. Write your answer on the space provided.
1. These are caused by the gravitational pull between the moon and Earth.
E I T S D
S W V E S
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3. This is caused by the melting of glaciers and iceberg.
E V L E L E S A E S I R
S A C U R L T N T E V M O M E
U R E G S R M T O S
Humans Beach
Coastal forest/trees
Estuary/river Waves
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What’s New
Coastal processes include waves, tides, sea level change, crustal movement and
storm surge. Waves are caused by the movement of the air masses in the coastal
environment. Tides refer to the gravitational pull between the Earth and the moon.
Sea level change is a result of the rise of ocean water which can be attributed to the
melting of glaciers or iceberg in the polar regions. Storm surge refers to the rising of
seawater due to changes in pressure and wind associated with a storm. Crustal
movement is caused by the motion of the oceanic and continental crust of the Earth.
Coastal Hazards
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Coastal Erosion
It is the loss or displacement of land along the coastline due to the action of waves,
currents, tides, wind-driven water or other impacts of storms. Coastal erosion is a
type of coastal hazard which is brought about by the different coastal processes.
Saltwater Intrusion
It is a major concern commonly found in coastal aquifers around the world. An
aquifer is an underground layer of permeable rock, gravel, sand or silt. Groundwater
from an aquifer is usually extracted by a water well. Once an aquifer becomes
contaminated it becomes unusable anywhere from 2 weeks to 10,000 years.
Saltwater intrusion is the induced flow of seawater into freshwater aquifers primarily
caused by groundwater development near the coast.
Figure 4. Aquifer
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Figure 5. Saltwater intrusion
Submersion
It refers to the movement of coastal sediments from the visible portion of a beach to
the submerged nearshore region of the coast.
Figure 6. Submersion
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What is It
The figure below shows the link between marine and coastal processes and coastal
hazards. These processes could lead to hazards in the coastline that can be mitigated
through different coastal management techniques which you will study in the next
module.
such as waves, tides, sea level change, storm surge and crustal
movement
Coastal Hazards
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What’s More
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Figure 10. Exposed beach front during low tide in Bali, Indonesia
(Photo taken by M. Cudiamat)
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What I Have Learned
Let us take a look at the main points of this module.
What I Can Do
Directions: As a Senior High School student, how can you help the local government
to mitigate the harmful effects of coastal and marine processes such as coastal
erosion, submersion and saltwater intrusion assuming that your community is prone
to these coastal hazards.
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
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Assessment
Directions. Read the following questions and choose the letter of the best answer.
Write the chosen letter on a separate sheet of paper.
1. Which of the following is NOT a coastal process?
A. waves C. tides
B. storm surge D. landslides
2. Which of the following is caused by the gravitational pull of the moon and
Earth?
A. tides C. sea level rise
B. storm surge D. tsunami
3. Which of the following is attributed to the rising of sea level in the polar
region?
A. snow
B. continents
C. glaciers
D. crust
4. What refers to the rising of seawater due to pressure and wind associated
with a storm?
A. tides
B. crustal movement
C. storm surge
D. waves
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C. storms
D. ocean waves
9. What do you call the movement of sediments from the visible portion of a
beach to the nearshore region of the coast?
A. tides
B. submersion
C. coastal erosion
D. saltwater intrusion
10. Which of the following coastal processes may cause hazards in the marine
environment?
A. tides
B. waves
C. crustal movement
D. all of the above
11. What do you call the scientific study of the chemical, biological and physical
properties of ocean water?
A. Biology
B. Chemistry
C. Physics
D. Oceanography
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Additional Activities
Directions. Read the article below from the Philippine Star in relation to the effects
of marine and coastal processes.
A. Coastal Erosion
MGB: Coastal erosion caused Zambales beach collapse
by Rhodina Villanueva (The Philippine Star) - July 2, 2013 - 12:00am
Answer the following questions based on the article you have read.
1. What is the article all about?
2. How did the MGB define coastal erosion?
3. What is the recommendation of the MGB about the issue?
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B. Saltwater Intrusion
Saltwater Intrusion Threatening Potable Water Supplies in Philippines
21 Jun 2010 - 20:58 by OOSKAnews Correspondent
MANILA, PHILIPPINES
Some 19 areas within the Philippines are facing contamination due to
saltwater intrusion, as many continue to extract water from the nation's
aquifers, according to the Philippine Sanitation Alliance (PSA) Elisea Gozun,
former Environment Secretary and current president of PSA and member of
Earth Day Network Philippines, presented the findings based on government
data on June 17.
"This is an irreversible process," Business Mirror quoted Gozun as
saying. More than half, or some 58 percent, of groundwater that is to be
used for potable supplies "is contaminated and needs treatment," she added.
Also, saltwater intrusion is affecting one of the nation's last remaining
potable water supply sources: rivers. Forty-nine percent of the river systems
classified for drinking water do not meet pollution standards.
The PSA expected Pasig-Laguna, Pampanga, Agno, Bicol, Cagayan,
Western Visayas and Cebu to be adversely affected by 2025.
The economic costs of the pollution is thought to exceed $ 1.7 billion USD
each year, with health costs from improper sanitation making up the lion's
share at $1.2 billion USD, followed by water costs like domestic use and fish
production at $391 million USD.
Gozun stressed that the loss of life was even more costly. She said 55
Filipinos die every day from diseases related to poor sanitation and more
than 11,338 Filipinos die each year from diarrhea.
"Improving sanitation is the key to achieving most of the Millennium
Development Goals," Gozun said.
The PSA made both large-scale and small-scale suggestions for
elevating the profile of the problem, including investment in wastewater
management, rainwater harvesting, water reuse, repairing leaky household
systems and using a cup of water to brush one's teeth.
Meanwhile, Senator Edgardo J. Angara urged increased investment in water
management and wastewater treatment.
"Climate change, urbanization and the need to feed a growing
population have put a strain on our finite water resources, and there is an
urgent need to address the dangers they pose to the health of our people
and the sustainability of our environment. More often than not, water
sanitation and sewerage systems in the country is overlooked and neglected.
We need to pour more resources into it," the Philippine Information Agency
quoted Angara as saying.
"The acute seasonal problem of lack of access to potable water has
large economic costs, as well as profound impact on the quality of life. Poor
water quality affects our citizens' health, lost agricultural production,
threatens food security, and a host of other damaging consequences," he
added.
Answer the following questions based on the article you have read.
1. What is the article all about?
2. How will you relate coastal hazards to water crisis in the Philippines?
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Week
What I Know
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
1. Which of the following is NOT a reason for human population to choose coastal
zones as settling grounds?
A. fertile agricultural land
B. abundant marine resources
C. peaceful and safe residential area
D. great possibility for trade and transport
2. What refers to the action taken to eliminate or reduce the long-term risks and
hazards in the coastal area?
A. alteration
B. mitigation
C. renovation
D. restoration
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3. What are the two processes interacting in a highly dynamic natural systems
of coastlines?
A. chemical and physical processes
B. endogenic and exogenic processes
C. oceanic and continental processes
D. atmospheric and geologic processes
4. Which of the following activities in coastal areas DOES NOT trigger hazard to
the natural balance of coastal system?
A. allowed number of tourists
B. construction of houses
C. development of hotels
D. prohibition of mining
7. What do you call the movement of saline water to fresh water aquifers which
can lead to the degradation or contamination of ground water including
drinking water resources?
A. erosion
B. salt intrusion
C. sea-level change
D. dewatering of beach
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9. Which of the following is the BEST method to avoid erosion?
A. break water construction
B. controlling land development
C. improving waste management
D. maintaining plant cover or vegetation
10. Which of the following processes is described as pumping out water from the
shores to prevent erosion?
A. beach dewatering
B. beach nourishment
C. breakwater construction
D. installation of sand bags
11. Which method are you going to use when there is a need to add a large
amount of sand to the coast?
A. beach dewatering
B. beach nourishment
C. breakwater construction
D. installation of sand bags
12. What will you construct to prevent the further advancement of saltwater if
already present in the coastal areas?
A. sand bags
B. breakwater
C. beach hotels
D. beach houses
13. Which of the following DOES NOT ensure effective management of saltwater
intrusion cases?
A. construction of seawalls
B. monitoring of coastal activities
C. assessment of coastal areas regularly
D. regulation of human activities along coastal zone
14. One of your classmates is living in a coastal area of the community. You found
out that this coastal area is already polluted. What activity can you suggest to
mitigate the said problem?
A. acoustic concert
B. coastal clean-up drive
C. population control campaign
D. recollection and reflection among the community
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15. Your school is located in a coastal area. You notice that waves are already
damaging the shore near the fence of the school especially during high tide
and monsoon seasons. What can be constructed to mitigate the said problem
of the school?
A. sand bag barriers
B. beach dewatering
C. breakwater
D. sea wall
Coastal areas have been attractive settling grounds for human population as they
provide abundant marine resources, fertile agricultural land and possibilities for
trade and transport. This has led to high population densities and high levels of
development in many coastal areas and this trend is continuing into the 21st
century. At present, about 1.2 billion people live in coastal areas globally, and this
number is predicted to increase to 1.8–5.2 billion by the 2080s due to a combination
of population growth and coastal migration. Along with this increase follows major
investments in infrastructure and the build environment.
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Figure 1. Breakwaters
What’s In
Activity 1: Read to Fill-out!
Directions. Read the article about coastal processes. Then, fill in the given table
below with the corresponding information needed.
2. Flooding
It also destroys habitat and may lead to great erosion. The main cause
of this hazard is the submersion or sea level rise, a climate change
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phenomenon through which ocean water volume increases, ice sheets and
glaciers melt, and occurrence of thermal expansion.
What’s New
333
Guide Questions:
What is It
With this, mitigation methods in the coastal zones for protection are enhanced
in these areas. Mitigation refers to action taken to eliminate or reduce the long-term
risks and hazards,
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Directions. Complete the following concept map by identifying the impacts and
mitigation method appropriate in the given human activities.
Construction of Land
Home Activity Water Disposal
Structures Development
Building Altering
Definition Dumping Waste structures landscape to
(Houses, hotel, agriculture or
etc.) residential
Impact
Mitigation
Method
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Options for Impacts:
Increased erosion
Increased sediments run-off
Sea level rise
Change natural drainage patterns
Enhanced salt intrusion
Seawalls - These are used to counteract waves that hit the shores. These
are offshore structures that protect coasts from parallel waves.
Groins / Stone barriers – It intercepts the steady flow of sand keeps the
particular sand from eroding.
Breakwaters – It can be constructed along coasts to prevent further
advancement of saltwater if already present
Beach nourishment – It is a method where a large amount of sand is
added to the coasts.
Installation of small walls or sandbags – These are used to counteract
waves that hit the shores.
Beach dewatering – It involves pumping out water from the shores to
prevent erosion.
Construction of buildings in a safe distance from the water
Ban of mining activities – This can cause decrease in pollutants
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According to the Department of Environment and Natural Resources, coastal
ecosystems of the Philippines are very productive and represent the huge amount of
natural resources. It provides food and livelihood to many people. It is also the most
famous tourist destinations in the archipelago. Thus, there are many business men
who made expeditious development in coastal zones. Along with these are the land
development and number of construction sites near the zone However, it is also the
most geologically active zone on Earth. Coastal processes in this zone may result to
erosion, submersion and saltwater intrusion.
Aside from concrete structures, there are also practices that can disturb and totally
destroy the natural coastal process.
Figure 5. Breakwaters
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Global Warming and Coastal processes
Crustal movements and sea level change are coastal processes and its
interactions affect the climate. They are part of tight interconnected Earth system
that affects both global and regional climates. On the other hand, climate change
also affects these processes.
We are very familiar with the enhanced global warming. It gives a lot of
consequences even if it is just a few degrees increased than the usual average
temperature. Global warming results to intense storms, flooding, droughts and
extreme storm. High temperature resulted to ice melting. Consequently, sea level
rises affecting the people throughout the world.
Activity 4: We Can!
Directions. Observe your community. Identify the different practices and activities
that cause and triggers global warming.
Practices/ Causes
Activities of the My Practices/
of Global
Community Activities
Warming
My Community
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What’s More
Activity 5: Making an Action Plan
Directions. Suppose you are the coordinator of the Municipal Disaster Risk
Reduction Management of your town. You are tasked to make an action plan to
mitigate the effects of coastal processes in risk zone. The action plan template is
already given below. Remember that the environmental and people health are your
priorities. Then, kindly answer the guide questions.
Resource
Project Speaker The
READY! To inform participants
Residents
and Venue Preparation gained
Conduct of
Resilience empower of action knowledge
Symposia Barangay
Enhancem residents Sound plans, and and skills
and Officials 2 months
ent Amidst on coastal System emergency on coastal
Awareness
Disaster hazards response mitigation
Campaign Committee
-Youth and Projector teams through
Empower mitigation action
ment Learning plans
kits
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Guide Questions:
1. What are the factors did you consider to make projects and activities?
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
2. Are all your objectives measurable and attainable? Justify your answer.
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
3. What are the difficulties/problem did you encounter in making the action
plan?
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
4. How did you cope up with the problem encountered in making the action
plan?
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
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What I Have Learned
Directions: Read the following statements and fill in the blanks with the correct
answer. Choose from the pool of words given below.
WORD POOL
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What I Can Do
342
Assessment
Directions. Read the following questions and choose the letter of the correct answer.
Write the chosen letter on a separate sheet of paper.
1. Which of the following activities in coastal areas can trigger hazard to the
natural balance of coastal system?
A. breakwater
B. sand erosion
C. sandbags and stone barriers
D. seawalls and island barriers
A. erosion
B. salt intrusion
C. sea-level change
D. water nourishment
4. Which of the following is the BEST reason for human population to choose
coastal zones as settling grounds?
5. What refers to the action taken to eliminate or reduce the long-term risks and
hazards in the coastal area?
A. alteration
B. mitigation
C. renovation
D. restoration
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6. Salt intrusion is the movement of saline water to fresh water aquifers which
can lead to the following EXCEPT
A. loss of vegetation
B. erosion to low land area
C. contamination of ground water
D. shortage in drinking water supply
7. What are the two processes interacting in a highly dynamic natural systems
of coastlines?
10. Which of the following structures are built to counteract waves that hit the
shores?
A. barrier
B. groins
C. jetties
D. seawalls
11. Which of the following DOES NOT ensure effective management of saltwater
intrusion cases?
A. construction of seawalls
B. monitoring of coastal activities
C. assessment of coastal areas regularly.
D. regulation of human activities along coastal zone.
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12. Which method are you going to use when there is a need to add a large
amount of sand to the coast?
A. beach promotion
B. beach nourishment
C. sand bag installation
D. seawalls construction
13. One of your classmates is living in a coastal area of the community. You found
out that this coastal area is already polluted. What activity can you suggest to
mitigate the said problem?
A. acoustic concert
B. coastal clean-up drive
C. population control campaign
D. recollection and reflection among the community
14. Your house is located in a coastal area. You notice that waves are already
damaging the shore near the fence of the house especially during high tide
and monsoon seasons. What can be constructed to mitigate the said problem
of your house?
15. What will you construct to prevent the further advancement of saltwater if
already present in the coastal areas?
A. beach nourishment
B. beach dewatering
C. breakwaters
D. sand bags
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Additional Activities
Directions. Choose one from the given the activities. Do the tasks given adhering to
the theme: “Benefits and Costs of Coastal Sustainable Development.”
1. Write a 1000-word essay.
2. Make a poster-collage using recyclable materials.
3. Create a jingle.
4. Create a two-minute infomercial.
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