2. Floating and sinking

3. Floating and sinking
Made by Cody

5. An investigation - what floats and what sinks?

6. An investigation - what floats and what sinks?
Object Predict What happened My thinking
Tennis ball Both Half in the water and half out because it has some air
Apple Sink 1/4 is out the water and 3/4 tiny little holes
in the water
Peg Float It sank!!! it has metal
Chalk Sink Float for 2 sec then sank it has tiny holes
Pumice Rock Sink 1/4 is out the water and 3/4 it has holes
in the water itʼs old
Tinfoil Both 1/4 in and 1/2 out itʼs light
Sponge Float We pushed it down it has holes
we took the bubbles out
Lid Float We pushed it down water can carry weight
Ping pong ball Float We pushed it down but it itʼs light
went back up

9. Float means to stay on
the water.

10. Float means to stay on
the water.
The ball is floating

11. Float means to stay on
the water.
The ball is floating The ball is floating

12. Float means to stay on Sink means to go under the
the water. water.
The ball is floating The ball is floating

13. Float means to stay on Sink means to go under the
the water. water.
The ball is floating The ball is floating The ball is sinking

15. What happens when you push a balloon into water?

16. What happens when you push a balloon into water?
The water is
111cm high.
The
balloon is
floating
It’s full of
air

17. What happens when you push a balloon into water?
The balloon is
being pushed
down by my
The water is hand.It’s full
111cm high. of air.The
water is trying
The to push the The water is
balloon is balloon back 175 cm high.
floating up
It’s full of
air

18. What happens when you push a balloon into water?
The balloon is
being pushed
down by my
The water is hand.It’s full
111cm high. of air.The
water is trying
The to push the The water is
balloon is balloon back 175 cm high.
floating up
It’s full of
air
Scientists use the word displacement to describe
this idea.

20. Archimedes was a man who lived a long time ago in Greece.
He found out about water displacement. They say it happened
when he got into his bath.

21. Archimedes was a man who lived a long time ago in Greece.
He found out about water displacement. They say it happened
when he got into his bath.

22. Archimedes was a man who lived a long time ago in Greece.
He found out about water displacement. They say it happened
when he got into his bath.

23. Archimedes was a man who lived a long time ago in Greece.
He found out about water displacement. They say it happened
when he got into his bath.
He jumped out the bath and ran out
shouting, “Eureka!” This means “I have
found it!” People said he was so happy

24. Archimedes was a man who lived a long time ago in Greece.
He found out about water displacement. They say it happened
when he got into his bath.
He jumped out the bath and ran out
shouting, “Eureka!” This means “I have
found it!” People said he was so happy

25. Archimedes was a man who lived a long time ago in Greece.
He found out about water displacement. They say it happened
when he got into his bath.
Our class read a book written by He jumped out the bath and ran out
Pamela Allen about Mr shouting, “Eureka!” This means “I have
Archimedes and his bath. found it!” People said he was so happy

27. How much space does a balloon take in the water?

28. How much space does a balloon take in the water?
Our method:

29. How much space does a balloon take in the water?
Our method:
1.We filled a container with water right to
the top.
2.We put the container in a large bowl.
3.We gently pushed the balloon into the container using a
flat board.
4.we poured the water that over flowed in a measuring
jug.
5.The amount of water that displaced was 1000mls.

30. How much space does a balloon take in the water?
Our method:
1.We filled a container with water right to
the top.
2.We put the container in a large bowl.
3.We gently pushed the balloon into the container using a
flat board.
4.we poured the water that over flowed in a measuring
jug.
5.The amount of water that displaced was 1000mls.

32. Hypothesis
If an object weighs less than the water it displaces,than the object will float
so... if an object weighs less than the water it displaces,than the object will sink.

33. Hypothesis
If an object weighs less than the water it displaces,than the object will float
so... if an object weighs less than the water it displaces,than the object will sink.
We tested the hypothesis
We designed an experiment

34. Hypothesis
If an object weighs less than the water it displaces,than the object will float
so... if an object weighs less than the water it displaces,than the object will sink.
We tested the hypothesis
We designed an experiment
2.Carefully
put the object 3. Pour the
1.weigh in a full bucket displaced
the water carefully 4. Weigh the
of water. Make
object into a small water
sure the
bucket of container.
water is sitting
in a large 5. Compare
bowl. the weight

36. objects
weight
of the
object
weight
of the
water it
displaces

37. big
candle
1702 g
objects
1739 g
weight
of the the
object water is
heavier
weight the
of the candle is
water it lighter
displaces the
candle
floated

38. big
candle
1702 g big rock
objects
1739 g 1989 g
weight
the 1350 g
of the
object water is the rock
heavier is
weight the heavier
of the candle is
the
water it lighter
water is
displaces the
lighter
candle
the rock sank
floated

39. big
candle
tin of
1702 g big rock
objects tomatoes
1739 g 1989 g
weight 475 g
the 1350 g
of the 331 g
object water is the rock
heavier is the tin is
weight the heavier
heavier
of the candle is the
the
water it lighter water is
water is
displaces the lighter
lighter
candle the tin
the rock sank
floated sank

40. we
big recorded
candle the results
tin of
1702 g big rock
objects tomatoes
1739 g 1989 g
weight 475 g
the 1350 g
of the 331 g
object water is the rock
heavier is the tin is
weight the heavier
heavier
of the candle is the
the
water it lighter water is
water is
displaces the lighter
lighter
candle the tin
the rock sank
floated sank

41. we
big recorded
candle the results
tin of
1702 g big rock
objects eureka! tomatoes
1739 g 1989 g
weight the 475 g
the 1350 g hypothes
of the 331 g
object water is the rock is is
heavier is the tin is
weight correct
the heavier heavier
of the candle is the
the
water it lighter water is
water is
displaces the lighter
lighter
candle the tin
the rock sank
floated sank