The Water Puzzle

1. The chemical symbol for water.
2. The name for a smaller stream that flows into a larger stream.
4. Name of the largest ocean.
5. A weather phenomenon where there is a lack of precipitation for a long period of time.
6. A pit or hole sunk into the earth to tap an underground source of water.
8. The movement of water down through the earth's surface.
11. The percentage of the earth’s water that is fresh water.
15. Tanks used to hold waste from homes when a sewer line is not available.
16. The process by which water vapor becomes a liquid or a solid.
17. A possible source of groundwater contamination.
18. A change in the quality of water that makes it unsuitable for certain uses.

1. The constant circulation of water from the atmosphere to the land and the oceans and back again.
2. Water _________ plant is a place where water is treated to make it safe for drinking.
3. The capacity of porous materials, such as sand and gravel, to transmit water.
7. A term used to describe the area drained by a river and its tributaries.
9. The act of adding water to crops.
10. The source of energy for the hydrologic or water cycle.
12. The temperature at which water changes from liquid into a gas or vice versa.
13. The wearing down or washing away of soil and land by the action of water, wind or ice.
14. The temperature at which water changes from solid into a liquid or vice versa.