Across
- 2. A continuous pattern in nature in which water moves as it changes state above, on or below the surface of the Earth
- 4. Change of state from a liquid to a gas
- 5. A geological formation of loose rock and soil that is saturated with water
- 7. The process of removing potentially dangerous substances from water
- 9. Change of state from a solid to a gas
- 11. Water that seeps through soil and cracks in rock and ends up underground
- 14. A large are of ice that permanently covers land
- 15. A substance that combines with oxygen to make water
- 16. Change of state from a solid to a liquid
- 18. Being able to meet the needs of the present without compromising the ability of future generations to do so
- 19. A river of ice formed from snow accumuation over a long period of time
Down
- 1. Solid or liquid water that falls to Earth's surface
- 3. Change of state from a gas to a liquid
- 6. Change to state from a liquid to a solid
- 8. Change of state from a gas to a solid
- 10. A substance that combines with hydrogen to make water
- 12. Water from precipitation and snowmelt that flows over Earth's surface
- 13. The depth at which loose rock and soil below Earth's surface are saturated with water
- 17. Sticky clumps formed from the reaction of alum in water