Across
- 5. the process of excess water vapor changing into liquid water when warm air cools
- 6. the rocky shell forming the Earth's surface
- 7. wearing away of the Earth's surface by wind, flowing water, or glaciers
- 8. large body of ice that moves across the surface of the Earth
- 10. regular movement of water from ocean to air to ground and back to the ocean
- 11. the theory that the continents were once joined and then slowly drifted apart
- 14. underground water-bearing layers of porous rock, sand or gravel
- 16. process of converting into vapor
- 18. thick middle layer of the Earth's interior structure, consisting of dense, hot rock
Down
- 1. the watery areas of the earth, including oceans, lakes, rivers, and other bodies of water
- 2. the part of the Earth where life exists
- 3. the removal of salt from seawater to make it usable for drinking and farming
- 4. the term scientists use to describe activities of continental drift and magma flow which create many of Earth's physical features
- 5. the part of a continent that extends underwater
- 9. moisture that falls to the earth as rain, sleet, hail or snow
- 12. surface land areas of the earth's crust, including continents and ocean basins
- 13. the innermost layer of the earth. Made up of a super-hot but solid inner core and a liquid outer core
- 14. a layer of gases that surrounds the Earth
- 15. water within the Earth that supplies wells and springs
- 17. a crack or break in the Earth's crust
