Effects of Force on Objects - Science PowerPoint

1. EFFECTS OF
FORCE ON
OBJECTS

2. LET’S START WITH
A PRAYER

3. TODAY'S OBJECTIVES
Explain the effects of force when
applied to an object
1
2
Explain the effects of force on the
shape, size and movement of objects.
3
Determine the changes that happen to
objects when force is applied to them
4
Develop ability to cooperate with
others
After today’s lesson, learners should be able to:

4. WHAT IS A FORCE?
Forces are part of activities in our daily life.
We apply forces to objects around us.
A force can cause an
object to start moving,
stop or change its speed
and direction.

5. PULL
A pull is a force that moves
something towards you or from
the opposite direction of the
force.
PUSH
A push is a force that moves
something away from you or
from the direction of the force.

6. CAN YOU NAME
SOME EXAMPLES
OF FORCES?

7. LOOK AT THESE EXAMPLES
Kicking a
ball
Pulling a
trolley

8. LET'S PLAY A GAME
YOU WILL GUESS A WORD. AS A CLUE,
YOU WILL BE GIVEN ALL THE LETTERS
BUT YOU NEED TO PUT THEM IN
CORRECT ORDER.
HOW TO PLAY?

9. LET'S GET STARTED!
ARE YOU
READY ?

10. Z S
E
Guess the word
QUESTION NO.1
I

11. I E
S
THE ANSWER IS
Z

12. E A
H
Guess the word
QUESTION NO.2
S P

13. H P
S
THE ANSWER IS
A E

14. Force can
change the
size and
shape of an
object

15. But did you know that a force can also
change the SHAPE or SIZE of an object?
A force can cause an object to start moving,
stop or change its speed and direction.
What can a force do to an object?
Have you ever seen or experienced objects
changing their shape and size?

16. The grape changes shape
by squeezing.
Force applied to squeeze an
object
The grape moves to the left.
A single force applied to
push an object
Forces and Changes in Shape

17. Forces and Changes in Shape
Caused by pushing forces
Compression
(decrease in length)
Caused by pulling forces
Stretching
(increase in length)
Caused by either pulling or
pushing forces
Bending
Compression, stretching and bending all rely on forces acting on an
object.

18. Forces and Changes in Shape
Twisting
Twisting and pounding also rely on forces acting on an object.
Pounding

19. LET'S PLAY
ASKING GAME

20. Match the correct picture that shows a different way of
using force to its corresponding name
HOW TO PLAY

21. Pounding
Choose the correct
picture
1
2
3
INDEX
Compressing
Choose the correct
picture
Bending
Choose the correct
picture
Twisting
Choose the correct
picture
4
5
6
Stretching
Choose the correct
picture
Squeezing
Choose the correct
picture

22. FIRST LEVEL
Choose the picture that shows force that is pounding.
Option
A B C
Option Option

23. RIGHT ANSWER
Option
A B C
Option Option

24. SECOND LEVEL
Choose the picture that shows force that is compressing
Option
A B C
Option Option

25. RIGHT ANSWER
Option
A B C
Option Option

26. THIRD LEVEL
Choose the picture that shows force that is bending

27. Right answer
SOLUTION
ADVANCE TO THE NEXT
LEVEL

28. FOURTH LEVEL
Choose the picture that shows force that is stretching

29. Right answer
SOLUTION
ADVANCE TO THE NEXT
LEVEL

30. A
Choose the picture that shows force is
twisting.
B
FIFTH LEVEL

31. A
B
RIGHT ANSWER
ADVANCE TO THE NEXT
LEVEL

32. A
B
FINAL LEVEL
Choose the picture that shows force is
squeezing.

33. A
B
RIGHT ANSWER

34. THANK YOU FOR
PLAYING!

35. GROUP ACTIVITY -
FORCES WITH DIFFERENT
OBJECTS

36. We squeezed the orange.
We crumpled the paper.
We compressed the plastic cup.
We pounded the egg shell.
We crushed the biscuit.
The orange becomes thinner.
The piece of paper was formed into a small
circular ball.
The plastic cup was flattened.
The egg shell was cracked into smaller pieces.
The biscuit breaks into smaller pieces.
ORANGE
BISCUIT
PIECE OF
PAPER
EGG
SHELL
PLASTIC
CUP
WHAT DID YOU DO TO CHANGE THE SHAPE OF
THE OBJECT
WHAT CHANGES TOOK PLACE AFTER APPLYING
FORCE TO THE OBJECT
OBJECT
POSSIBLE ANSWERS

37. 1. If the object is pounded it will crush into _____.
2. If the object is stretched it will become ______.
3. If the object is crumpled it will turn into a _____.
4. If the object is pressed it will be _____.
5. If the object is squeezed it will become ____.
rounded shape flattened longer.
thinner. smaller pieces
Complete the following sentences:

38. Imagine you are a bridge engineer who needs to
design a bridge that can withstand strong winds.
How can you use your understanding of forces to
ensure the bridge remains stable and does not
collapse?
DESIGN A
BRIDGE

39. RECAP OF
CONCEPTS
squeezing, crashing, crumpling, pounding,
compressing
What are the ways
you can change
the shape of
objects?

40. RECAP OF
CONCEPTS
The object will change it’s shape and size
What do you think
will happen to an
object if you will
apply force?

41. RECAP OF
CONCEPTS
Explain the effects of force when applied to an
object
Explain the effects of force on the shape, size and
movement of objects.
Determine the changes that happen to objects
when force is applied to them
Develop ability to cooperate with others .
Our objectives
today

42. THANK YOU