1.

The following choices are true in relation to the location of earthquake and volcanoes
that shows a pattern based on the responsible of tectonic plate process, except one.
A. Collision B. Rifting C. Shearing D. Ridges

For Questions, 2-5, please study the shaded part of the map below and answer the
succeeding questions.

Patterns of earthquake and volcanoes. clarkscience8.weebly.com

2. In which of the places listed below will you likely experience ground shaking caused by
earthquakes?

A. Along the borders of Philippine C. In the Middle of Eurasia

and Pacific Plate
B. In the Middle of the Pacific D. In the Middle of South America
Ocean

3. What do you think is the event shown by the shaded part of the map above?
A. Ridges C Active volcanoes
B. Mountain ranges D Active fault

4. Which of the following statements is true about earthquake epicenters?

A. They are evenly distributed. C They follow a certain line or pattern.
B. They are randomly distributed. D They involve the release of kinetic energy
along a geologic fault.

5. Which of the following is the most common location for earthquake epicenters?
A. In an oceanic plate C In a continental plate
B. In a hot spot D Along the plate boundaries
 6. Which of the following statements about the distribution of volcanoes, earthquakes and
mountain ranges is true?
A. All epicenters of earthquakes C. All areas with active volcanoes experience
have a nearby volcano. earthquakes.
B. All epicenters of earthquakes D. Volcanic eruptions are common in
have a nearby mountain range transform plate boundaries.

7. Which of the following statements show the importance of why people need to be aware
of the places that are prone to earthquakes?
A. To know what food must be stored.
B. To identify what relief goods to be prepared
C. To identify when to evacuate
D. To prepare the possibility that earthquakes may occur

8. Generally, what happens when a tectonic plate is located in the plate boundaries?
A. Mountain ranges formation C Rift valley formation
B. Volcanic eruptions D Earthquakes

9. Which of the following natural phenomena will take place during the movement of
plates when two tectonic plates slide past each other?
A. Volcanic eruption B. Earthquake C. Tsunami D. Sinkholes

10. In the images that are shown below, which one has the most obvious evidence for
continental drift?
A. C.

B. D.

11. Plate tectonics is the theory that Earth’s land masses are in constant motion. The
realization that Earth’s land masses move was first proposed by Alfred Wegener, which
he called Continental Drift. What was the main reason why Wegener’s continental
theory drift hypothesis was rejected?
A. He could only explain for the C. He could not provide enough evidence on
movement of the continents the movement of the continents
B. His evidences were incomplete D. He did not know what drove this movement

12. What was the initial spark that started Alfred Wegener (vey-guh-nuhr) in his formulation
of the theory of Continental Drift?
A. Shapes and orientation of the C. Mountain ranges
land masses
B. Fossils and rocks D. Volcanoes and rift valleys

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 13. How did Wegener’s hypothesis of continental drift differ from the current theory of
plate tectonics?
A. Wegener’s hypothesis was C. According to Wegener’s hypothesis, the
supported with evidence from driving force for plate tectonics was mantle
fossils and rock formations. convection.
B. According to Wegener’s D.
hypothesis, South America and Wegener’s hypothesis was based on the
Africa were farther apart in the assumption that the continents were much
past. younger than the ocean basins.

14. Tectonic Plates are responsible for shaping the earth's crust. Every continent formed
rises above the sea due to plate tectonics. Which event could have happened when the
Himalayan mountains were formed?
A. Hotspot C. Transform fault boundary
B. Divergent boundary D. Convergent boundary

15. The continents fit together like puzzle pieces. What did this imply that led Alfred
Wegener to propose a theory in 1910?
A. that pieces of the Earth’s crust are moving quickly
B. that pieces of the Earth’s crust are moving very slowly
C. that the Earth's crust is solid and unbroken
D. that pieces of the Earth's crust are shaped like puzzle pieces

16. In which cross section do the arrows best show the convection occurring within the
asthenosphere beneath line XY?

A. 1 B. 2 C. 3 D. 4

The illustration below shows large and small lithospheric plates. These plates are
moving very slowly but constantly. Refer to this illustration to answer item numbers 9
to 11. Use the same choices below for item numbers 17 to 19.

A. Convergent boundary C. Transform fault boundary

B. Divergent boundary D. Transitional boundary

17. Which of the following types of plate boundary occurs between Philippine Plate and
Pacific Plate?
18. Which of the following types of plate boundary occurs between South American plate
and African Plate?

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 19. Which of the following types of plate boundary occurs in San Andreas fault that is found
in the North American Plate?

20. The lithospheric plates are believed to be moving slowly. How do the plates move at a
transform fault boundary?
A. They move past each other C. They move away from each other
B. They move toward each other D. They do not move.

21. Geologists have hypothesized that the movement of tectonic plates is related to
convection currents in the earth’s mantle. Which of the following statements is true
about these movements?
A. Convection currents describe the rising, spread, and sinking of gas, liquid, or molten
material caused by the application of heat.
B. The convection of the Earth’s mantle is driven by cold meaning that the colder
material rises and the hotter material sinks
C. The pressure occurs because of the gravitational pull of the Earth
D. The motion of convection in the asthenosphere is what breaks the plates (the crust
and upper mantle of the Earth) apart and moves them around.

22. Which of the following statements about the lithosphere is NOT true?
A. The lithosphere is the coolest and most rigid part of the Earth.
B. The lithosphere is the solid, outer part of the Earth.
C. The lithosphere includes the brittle uppermost portion of the mantle and the crust
D. The lithosphere behaves like the asthenosphere.

For questions 23-24 please refer to the image below

23. The figure above shows two oceanic crusts. Which crust is most likely to subduct?
A. The older and denser plate will subduct beneath the less dense plate.
B. The younger and denser plate will subduct beneath the less dense plate.
C. The bigger continent will subduct beneath the smaller continent.
D. The less dense plate with an island volcanic arc will subduct beneath the plate.

24. What will be formed above the crust after the plate is pushed down and melted into the
mantle?
A. Ridge C. Continental volcanic arc
B. Rift Valley D. Island volcanic arc

25. Which of the following geologic features can be observed in a place where two oceanic
crusts diverge?
A. Island volcanic arc B. Tsunami C. Ridge D. Fault

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 For Item 26, refer to the illustration below.

26. The movement of the lithospheric plates is facilitated by soft, weak solid upper mantle
material that is so hot that it behaves plastically and can flow. Which of the following
layers is described in the statement?
A. Atmosphere C. Lithosphere
B. Asthenosphere D. Mantle

27. Which of the following statements is the best summary about converging two
continental crusts or plates?
A. This type of convergence will form volcanoes and tsunamis.
B. This type of convergence will cause no subduction since the two plates have the
same densities.
C. This type of convergence will result in a group of volcanic arc islands.
D. The convergence will result in a hot molten material called magma

28. From the image below, what type of plate boundary or movement is happening in the Mid-
Ocean Ridge?

A. Divergent boundary C. Transform fault boundary

B. Convection D. Convergent Boundary

29. As a new seafloor is formed at the mid-ocean ridge, the old seafloor farthest from the
ridge is destroyed. Which of the following processes best describes how the oceanic
crust plunges into the earth and destroys in the mantle?
A. conduction B. destruction C. slab pull D. subduction

For questions nos. 30 - 32, please refer to the image below.

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 30. The above illustration depicts the cycle motion of the convection current. What happens
to the temperature and density of the material between points B and C?
A. Heat moves from areas of lower temperature to areas of higher temperature
B. Convection occurs through the movement of particles
C. Both the temperature and density of the material increases.
D. Both the temperature and density of the material decreases.

31. The figure from item No. 30 illustrates a convection cell. In which part is the
temperature of the mantle material highest?
A. Point A B. Point B C. Point C D. Point B & C

32. In which layer of the earth does convection current take place?
A. Crusts B. Lithosphere C. Mantle D. Atmosphere

33. What is the driving force that facilitates the movement of the lithospheric plates?
A. The force of the atmosphere C. Convection current
B. The magnetic force at the pole D. The gravitational force of the moon

34. The diagram below represents the pattern of convection current. Which statement below
describes the best pattern?

A. The hot core heats the material above it, causing it to rise toward the crust, where
it cools.
B. The magma will continue to rise, so it moves vertically and sinks back down.
C. The cold core heats the material above it, causing it to sink toward the crust, where
it boils.
D. The heated magma expands and sinks.

35. Which of the following statements best summarizes the process of subduction?
A. Old, thick continental C. Extensive volcanism empties a magma
lithosphere slowly sinks under chamber and causes the crust to collapse in
its own weight. on itself.
B. Old, dense oceanic lithosphere D. Two tectonic plates move suddenly past
dives beneath lighter continental each other when the rocks break and
lithosphere. friction between them is overcome.

36. Study the pattern of normal and reversed magnetic and relative age of the igneous
bedrock composing the ocean floor of the Mid – Indian Ridge.

Which diagram best represents the polarity of the magnetic field preserved in the ocean-
floor bedrock found on both sides of the Mid-Indian Ridge?
A. 1 B. 2 C. 3 D. 4

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 Use the illustrations below for Item No. 37

The diagram below represents the patterns of stripes that provide the history of
seafloor spreading.

37. What did scientists conclude when they discovered that stripes of ocean floor leading
away from the crest showed polarities that alternate between normal and reversed?
A. That the earth was newer than originally thought
B. That the earth‘s magnetic field must have flip-flopped/reversed many times since
its formation.
C. That the earth was older than originally thought.
D. That the earth’s magnetic field must have remained constant since formation.

Please study the figure for questions number 38-39.

38. Why does the Earth not expand/ grow in spite of the sea floor spreading?
A. Because of subduction in the Atlantic Ocean.
B. Because of subduction in the Indian Ocean.
C. Because of subduction in the Pacific Ocean.
D. Because of subduction in the Gulf of Mexico.

39. Which of the following statements is supported by the information in the image above?
A. That moving apart of the plates, C. That moving apart of the plates, Pacific
Atlantic Ocean was expanding Ocean was expanding while Atlantic Ocean
while Pacific Ocean was was shrinking
shrinking
B. That trenches will be formed by D. That subduction takes place when the plates
the moving apart of the plates. move apart.

40. Below is a map of the Mid Atlantic Ridge. Points A through D are locations on the ocean
floor. Line XY connects locations in North America and Africa.

Samples of ocean-floor bedrock were collected at points A, B, C, and D. Which sequence

shows the correct order of the age of the bedrock from oldest to youngest?
A. D > C > B > A C. C > B > D > A
B. A > D > B > C D. A > B > D > C

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 ANSWER KEY
1. D
2. A
3. C
4. C
5. D
6. C
7. D
8. D
9. B
10. A
11. C
12. A
13. A
14. D
15. B
16. B
17. A
18. B
19. C
20. A
21. A
22. D
23. A
24. D
25. A
26. B
27. B
28. A
29. D
30. C
31. A
32. C
33. C
34. A
35. B
36. A
37. B
38. C
39. A
40. B

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