extra credit

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

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