5 TH

1. When ice melts, it turns from ..... state to .........state.

• a. liquid-solid 

• b. solid-liquid 

• c. liquid - gas

• d. solid-gas

2. Ice can turn into water by.....

• a. cooling.

• b. freezing.

• c. rusting.

• d. heating

3. The source of thermal energy which keeps living things alive on the Earth is the………..

• a. moon.

• b. fire.

• c. heater.

• d. Sun.

4. When the water is heated, its particles ..............

• a. move slower.

• b. move faster.

• c. move with the same speed.

• d. do not move.

5. When we heat a liquid, the distance between its particles will ………..

• a. decrease.

• b. increase.

• c. not be affected.

• d. become zero.

6. When ice is kept in a cold temperature, it. ………….

• b. turns into steam.

• c. remains as it is.

7. Ice changes from solid state to liquid state by increasing its………………

• a. length.

• b. mass.

• c. temperature.

• d. volume.

8. When particles of water absorbs light energy, they will……………

• a. move faster.

•  b. vibrate slower. 

• c. spin slower.

• d. become close together.

1. An ice cream turns into liquid by cooling.

• T

• F

2. If we increase the temperature of some pieces of ice, they will melt. 

• T

• F