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LEARNING ACTIVITY
SHEET
IN SCIENCE
Quarter 3 – LAS 1: Effects of Force on
Objects

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Name of Pupil: _____________________________________________
Learning Area-Grade Level: ______________________
Date: ___________________________________________
SCIENCE - GRADE 4
Quarter 3 – LAS 1: Effects of Force on Objects
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Regional Director : Gilbert T. Sadsad

Assistant Regional Director : Ronelo Al K. Firmo

Development Team of the Learning Activity Sheet

Writer : Eleanor C. Caparros

Editors/Reviewers : Christian M. Espiritu
: Noel V. Ibis
Lay-out Artist : Eleanor C. Caparros

Management Team
Schools Division Superintendent : Nympha D. Guemo
Assistant Schools Division Superintendent : Maria Flora T. Pandes, EdD
Chief Curriculum Implementation Division : Emma T. Soriano, EdD
Education Program Supervisor : Noel V. Ibis, PhD

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 Introductory Concept

Force is applied in everything we do. It can cause the things to move,

change the shape, size or movement of an object. Force can cause an object
to undergo a change in speed and a change in direction. Force is push or
pull. Pushing, pounding, compressing, bending, twisting, stretching or
squeezing are some ways of changing the shape of an object.

Learning Skills:
Explain the effects of force when applied to an object (S4FEIIIa-1)
At the end of this lesson, you should be able to:

 determine the changes that happen to objects when force is applied; and
 explain the effects of force on the shape, size and movement of an object.

Learning Activities
Pre-Test

Directions: Read each statement. Write True on the spage provided if the
statement is correct and False if it is not.
_______1. Chalk can be crushed when you applied force on it.
_______2. Objects with lesser mass require greater force for it to move.
_______3. The stronger the force exerted, the farther the object travels.
_______4. Objects that are at rest will remain at rest unless acted upon by a
force.
_______5. Pulling the rubber band in opposite direction can change the size and
shape of an object.

Analysis
Directions: Use crayon to mark how force can be applied to change the
physical appearance of solid materials. The first one is done for you.

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 T A P U S H I N G A F K Q P
B W C O M P R E S S I N G O
E B I D A D G Y D B G L R U
N C G S Q U E E Z I N G S D
D D A E T E A R I N G M T I
I P U L L I N G E C H N U N
N E B F B Z N C F D I O V G
G F C G C F A G G E J P W Z

Directions: Determine the effects of force on objects when force is applied.

Do the following
What happened to each
Objects activities in each
of the objects?
objects
1. toy car push
2. tin can pound
3. clay press
4. wire bend
5. sponge twist
6. rubber band stretch
7. cloth squeeze
8. plastic bag blown or carried by
the wind
9. toy car push then block it with
your hand
10.big rock push

Abstraction
Based on the activity, answer the following questions:
1. What did you apply on the objects in order for them to move and change the
size and shape?
2. What happened to the shape of some objects when force was applied to
them?
3. Is it possible that an object’s shape and size will be affected by the
application of the force at the same time? Cite an example.

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4. Without force, will the object at rest move?
5. Without force, will the object in motion stop?
6. Without force, will the moving object change in direction?
7. What did you do to make the object move faster? slower?
8. How does force affect the motion of the object?
9. How will you describe the effect of force based on the activity?

Remember

 A force is a push or pull, which occurs when two or more objects

interact with each other.
 A force has amount and direction.

Effects of Force on Objects

The shape of an object may change when force is applied on it. Pushing a
dough, pounding pepper, compressing cotton, bending wire, twisting rope,
stretching rubber band, or squeezing rubber ball are some ways of changing the
shape of an object.
Also, when force is applied to an object, its size may change. Some
situations where force is applied and changed the size are the following:
dropping a glass, pounding garlic, cutting a paper, sharpening a pencil, and
grinding papaya.
The force applied on an object also affects its movement.
It can change the state of rest or motion of an object. An example is when
your hand pushes a marble slightly on top of a table. The ball once sets into
motion. Now, if you keep your hand on the opposite side of the moving ball, the
moving ball comes into a state of rest.
Likewise, it can change the direction of movement. An example is when a
football player apply force by kicking the ball in different directions.

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 Also, it can change how fast or slow the movement of an object is. A ball
travels farther when the force applied is stronger and it travels nearer when
lesser force is applied to it.
Effects of Force on the Movements of an Object
If force is applied on a moving object, the object will probably do one of the
following:
 speed up/move faster (accelerate), if the force applied is along the
direction of the object
 stop, if the force applied is opposite the direction of the moving object
and is just enough to stop it
 change direction, if the force applied is from left or right of the moving
object
 return, if the force applied of the opposite direction and is more than
enough to stop it.

Application
A. Directions: Determine whether the following objects will stop,
change direction, move faster or changes its size and shape when force is
applied to it.

__________________________1. A ball rolling down a hill.

__________________________2. A baseball hits a pitched ball.
__________________________3. A falling apple hits the ground.
__________________________4. Compressing a spring to wind a toy.
_________________________________5. A walking boy was suddenly pushed by
another boy from his behind.

B. Directions: Explain the changes that will happen to the size of the given
objects if force will be applied.
1. dropping of glass plate

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 2. cutting a piece of wood

3. an egg dropped on the floor

4. squeezing a banana

5. grinding rice grains

C.Directions: Apply force to the materials listed in the chart below. You can
step on it, tear it, break it,hammer it, push it, pull it or roll it. Then check the
column of the correct answer.

Is there a change in Is there a change in

Materials the appearance ? the directions ?
Yes No Yes No
1. plastic bottle
2. styrofoam cups
3. leaves of grasses
4. barbecue stick
5. stone
6. soccer ball
7. small wooden table
8. cardboard

D. Directions: Encircle the letter of the correct answer.

1. Which among the following object will require a greater force to move?
a. refrigerator c. television
b. study table d. monoblock chair
2. Which among the objects below require lesser force to move?
a. book b. notebook c. pencil d. blackboard eraser
3. Which of the following objects will move easily when a force is applied
to it?
a. plastic dining table c. small refrigerator
b. empty steel cabinet d. small wooden dining table
4. If a boy will have to kick one object, which one from the list below will
move the farthest upon kicking?
a. shut put ball b. soft ball c. golf ball d. tennis ball

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 5. Which among the objects will move faster upon the application of a
force?
a. marble b. pebble c. beach ball d. ping-pong ball

Answer Key
Pre - Test
1. True 2. False 3. True 4. True 5. True
Analysis:
bending pushing compressing squezzing tearing pulling pounding

Objects What happened to each of the objects?

1. toy car It will move
2. tin can Change its size and shape
3. clay Change its size and shape
4. wire Change its size and shape
5. sponge Change its size and shape
6. rubber band Change its size and shape
7. cloth Change its size and shape
8. plastic bag It will move to different directions
9. toy car It will move then stop
10. big rock It will move
Abstraction:
A. 1. Force 2. It changes its size, shape and directions 3. changed/answer vary.
4. No 5. No 6. No 7. Applied force on it
8. Force may speed up or accelerate the speed or stop the objects
9. Force can change the size and shape of an object. Force can change the movement of the object. It can make
things move or stop moving. It changes the direction of a moving object. It also makes the movement
faster or slower.
Application
A. 1.move faster 2. change in direction 3. stop 4. change in sie and shape
5.move faster

B. 1-5. change in size and shape

C.
Is there a change in the Is there a change in the
Materials appearance ? directions ?
Yes No Yes No

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 1. plastic bottle  
2. styrofoam cups  
3. leaves of grasses  
4. barbecue stick  
5. stone  
6. soccer ball 
7. small wooden table  
8. cardboard  

D.
1. a 2. c 3. a 4. d 5. d

References

Abutay, L. Bonao D., Crucis E.,Eslabra J., Gramaje E., Guadamor M., Hernandez A., Ilagan L. Llamera F., Manawatao R.,
Panganiban H., Rojo J., Tosco RR., and Zape J., Science Grade 4, Learner’s Material, First Edition 2015. Department of
Education (2015), pp. 171-175

Abutay, L. Bonao D., Crucis E.,Eslabra J., Gramaje E., Guadamor M., Hernandez A., Ilagan L. Llamera F., Manawatao R.,
Panganiban H., Rojo J., Tosco RR., and Zape J., Science Grade 4, Teacher’s Guide, First Edition 2015. Department of
Education (2015), pp. 215-219