Across
- 2. Added to water to prevent tooth and gum decay.
- 4. The type of water which has lots of minerals in it, stopping a large lather from forming.
- 7. When water vapour (gas) cools and turns into clouds (think showers!)
- 9. Sea water cannot be drunk by humans as it is too s______.
- 10. Rain / hail / sleet that falls from the clouds.
- 13. Used to measure the temperature of water.
- 16. As the level of pollution increases, the volume of which gas decreases?
- 17. A medical condition that occurs when you do not drink enough water.
Down
- 1. Added to water to kill bacteria and germs.
- 3. Something that can be built to prevent flooding.
- 5. A period of dry, hot weather leading to a shortage of water.
- 6. A method used to separated solids from liquids.
- 8. When water on the surface of the ocean turns into water vapour.
- 11. Number of litres of water recommended to drink in a day.
- 12. A word that describes something that dissolves in water.
- 13. To reduce water usage when brushing your teeth, turn off the _____.
- 14. If there is lots of rain, or a river breaks its banks, this may happen.
- 15. A diarrhoeal disease caused by drinking dirty water.