Plate Tectonics

3. solid outer layer of earth made of crust and upper part of mantle
6. single, large ocean that covered earth's surface
8. sudden movement of earth's surface
10. study of alignment of magnetic minerals in rocks
11. boundary where 2 plates are sliding past each other
12. boundary where 2 tectonic plate are moving toward each other
14. molten rock in earth's surface
15. movement of heated material due to differences in density (different temperatures)
17. supercontinent that formed 300 million years ago
18. boundary where 2 tectonic plates are moving away from earth other

1. piece of lithosphere with unique geologic features
2. single landmass that broke up to form continents
4. process where oceanic seafloor forms when magma rises pushing older seafloor away
5. breaking apart of earth's surface
7. theory explaining how lithosphere moves and changes shape
9. solid plastic part of the mantle
13. undersea mountain chain with steep narrow valley
16. can form when magma erupts onto earth's surface