Water Cycle

5. The change of water from a liquid to a gas (water vapour) due to heat gain.
7. The process where water vapour (gas) changes into liquid water droplets.
10. The gas that forms when water boils.
11. The gaseous form of water that can exist below 100°C; does not require boiling to form.
13. The amount of space that an object or substance occupies.
14. While the temperature of melting ice remains at 0°C, it is still _____ heat until all of it becomes water.
15. The measure of the amount of water vapour in the air.

1. Complete this sentence: “No definite volume” means that the volume of the substance can _____.
2. The water cycle is the _____ movement of water between the Earth and the sky.
3. The amount of matter in an object.
4. Evaporation produces a ____ effect. Water gains heat from its surroundings to evaporate into water vapour, causing the surroundings to lose heat.
6. Occurs when water droplets in clouds become large and heavy, falling as rain, snow, or hail.
8. Water is essential for plants to _____ substances within the plant.
9. Evaporation only occurs at the surface of water, whereas boiling occurs _____ the water.
12. The force exerted on an object due to gravity.