extra credit
Across
- 4. the thin layer of gases that surrounds the earth
- 6. thick middle earth's the earths interior structure consists of hot rock that is dense but flexible
- 9. the theory that the continents were once joined and then slowly drifted apart
- 11. a crack or break in the earth's crust
- 12. the term scientists use to describe the activities of continental drift and magma flow which create many of earth's physical features
- 15. the part of the earth where life exists
Down
- 1. part of a continent that extends out underneath the ocean
- 2. the watery areas of earth, including oceans, lakes, rivers, and other bodies of water
- 3. the movement of weathered rock and material by wind, glaciers, and moving water; the wearing away of soil
- 5. Chemical or physical processes that break down rocks into smaller pieces
- 7. uppermost layer of the earth that includes the crust, continents, and ocean basins
- 8. A bend in layers of rock, sometimes, caused by plate movement
- 10. molten rock that is located below the earth's surface
- 13. outer layer of the earth, hard rocky shell forming the earth's surface
- 14. innermost layer of the earth made up of a super hot but solid inner core and a super hot liquid outer core