The Water Puzzle

4. A pit or hole sunk into the earth to tap an underground source of water.
7. A term used to describe the area drained by a river and its tributaries.
11. Water _________ plant is a place where water is treated to make it safe for drinking.
15. The temperature at which water changes from solid into a liquid or vice versa.
16. The wearing down or washing away of soil and land by the action of water, wind or ice.
18. The act of adding water to crops.
19. The chemical symbol for water.
20. The capacity of porous materials, such as sand and gravel, to transmit water.

1. The constant circulation of water from the atmosphere to the land and the oceans and back again.
2. The process by which water vapor becomes a liquid or a solid.
3. A change in the quality of water that makes it unsuitable for certain uses.
5. A possible source of groundwater contamination.
6. Tanks used to hold waste from homes when a sewer line is not available.
8. The movement of water down through the earth's surface.
9. The source of energy for the hydrologic or water cycle.
10. Name of the largest ocean.
12. The name for a smaller stream that flows into a larger stream.
13. The temperature at which water changes from liquid into a gas or vice versa.
14. A weather phenomenon where there is a lack of precipitation for a long period of time.
17. The percentage of the earth’s water that is fresh water.