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Science 2nd grade | UNIT 3: Changing materials 3.6 Check your progress

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visibility 119update 3 years agobookmarkshare

3.6 Check your progress

 

1) Carlo the clown has finished his show.
Can you answer these questions?
a: How has the balloon in Carlo's hand changed shape?
b: Carlo has dropped the plates. What has happened to the shape of some plates?
c: Carlo has crashed his car.

What has happened to the shape of the car?
2) Juno used different elastic bands to flick three identical paper aeroplanes.

Distance paper plane flew in metres Elastic
2

very thin elastic

4

thin elastic

6

thick elastic

a: Which elastic made the plane fly furthest?
b: Which elastic made the plane fly the shortest distance?
c: What would happen if Juno used string instead of elastic?
3) What happens to these materials when they are heated?
a: chocolate
b: butter
c: ice
4) What happens to these materials when they are put in a freezer?
a: water
b: cooking oil
c: warm liquid chocolate
5) Musa stirred sugar into cups of warm water
 In cup a he could dissolve 2 spoonfuls.
In cup b he could dissolve 4 spoonfuls.
In cup c he could dissolve 7 spoonfuls.

If he tried this with sand instead of sugar, what would happen?

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