eurekami

What happens when we cool it?

2nd grade (Year 3 in England) · 16 questions · Common Core: NGSS.2-PS1-4 · England: KS1 Y2 Uses of everyday materials, KS2 Y4 States of matter

Name

Date

Score/ 16

1
Question 1
A cold drink can has drops of water on the outside on a warm day. Where did they come from?
- A. The drink leaked through the metal.
- B. Water vapour in the air cooled on the can and turned into droplets.
- C. The can is sweating like a person.
- D. It rained on the can indoors.
2
Question 2
What happens when this cools down: steam hitting a cold window?
- A. sets hard again
- B. turns into water droplets
- C. turns back into solid wax
- D. becomes an ice lolly (popsicle)
3
Question 3
True or false? Water gets bigger and hotter when it freezes.
- A. True
- B. False
4
Question 4
Why does a bathroom mirror steam up after a hot shower?
- A. Soap sticks to the mirror.
- B. Warm, damp air cools on the mirror and forms tiny water drops.
- C. The mirror is melting.
- D. Light turns into water.
5
Question 5
What happens when this cools down: hot candle wax left to cool?
- A. becomes an ice lolly (popsicle)
- B. turns back into solid wax
- C. sets hard again
- D. sets into a wobbly solid
6
Question 6
True or false? Cooling water below 0 °C turns it into ice.
- A. True
- B. False
7
Question 7
Why does a bathroom mirror steam up after a hot shower?
- A. Light turns into water.
- B. Soap sticks to the mirror.
- C. Warm, damp air cools on the mirror and forms tiny water drops.
- D. The mirror is melting.
8
Question 8
What happens when this cools down: water in the freezer?
- A. turns into water droplets
- B. turns back into solid wax
- C. freezes into ice
- D. becomes an ice lolly (popsicle)
9
Question 9
True or false? Water gets bigger and hotter when it freezes.
- A. True
- B. False
10
Question 10
Why does a bathroom mirror steam up after a hot shower?
- A. Light turns into water.
- B. Warm, damp air cools on the mirror and forms tiny water drops.
- C. Soap sticks to the mirror.
- D. The mirror is melting.
11
Question 11
What happens when this cools down: steam hitting a cold window?
- A. becomes an ice lolly (popsicle)
- B. turns into water droplets
- C. freezes into ice
- D. sets hard again
12
Question 12
True or false? Cooling an egg makes it cooked.
- A. True
- B. False
13
Question 13
Hot wax is poured into a candle mould. What must happen before you can take the candle out?
- A. The wax must dissolve.
- B. The wax must be heated more.
- C. The wax must boil.
- D. The wax must cool and become solid.
14
Question 14
What happens when this cools down: water in the freezer?
- A. turns into water droplets
- B. sets into a wobbly solid
- C. freezes into ice
- D. sets hard again
15
Question 15
True or false? Frozen juice can never melt back into juice.
- A. True
- B. False
16
Question 16
Hot wax is poured into a candle mould. What must happen before you can take the candle out?
- A. The wax must dissolve.
- B. The wax must cool and become solid.
- C. The wax must be heated more.
- D. The wax must boil.

All done? Color in the animal! · Free from eurekami.com/math

for the adult only

Answer key: What happens when we cool it?

1. B. Water vapour in the air cooled on the can and turned into droplets.
2. B. turns into water droplets
3. B. False
4. B. Warm, damp air cools on the mirror and forms tiny water drops.
5. B. turns back into solid wax
6. A. True
7. C. Warm, damp air cools on the mirror and forms tiny water drops.
8. C. freezes into ice
9. B. False
10. B. Warm, damp air cools on the mirror and forms tiny water drops.
11. B. turns into water droplets
12. B. False
13. D. The wax must cool and become solid.
14. C. freezes into ice
15. B. False
16. B. The wax must cool and become solid.