Across
- 3. percent of earth's water that is salt water
- 5. water under the ground that supplies springs and wells
- 8. rain, snow, sleet or hail
- 10. first country to use chlorine to kill germs in water
- 11. percent of earth's water that is fresh
- 14. water as a gas in the air
- 15. water vapor becoming a liquid or a solid
Down
- 1. a water source under the ground
- 2. water moving downward through openings in the soil
- 4. water moves from the earth to the air and to the earth again
- 6. percent of water that is on the earth from glaciers
- 7. water the runs along the soil and goes into lakes and rivers
- 9. liquid water becoming a gas
- 12. first people to record methods of treating water
- 13. percent of earth's surface that is water