Across
- 3. water under the ground that supplies springs and wells
- 4. a water source under ground
- 5. water as a gas in the air
- 8. water moves from the earth to the air and to the earth again
- 11. water moving downward through openings in the soil
- 14. liquid water becoming a gas
Down
- 1. these people were the first people to treat water
- 2. water that runs along the soil and goes into lakes and rivers
- 4. what is one phase of water
- 6. rain, snow, sleet, or hail
- 7. water vapor becoming a liquid or a solid
- 9. we drink this
- 10. the first country to use chlorine to kill germs
- 12. number of hydrogen atoms in one molecule
- 13. number of oxygen atoms in one molecule