Homework menu

3. the relatively thick part of the earth's crust that forms the large landmasses
8. process by which super continents form and break over millions of years
11. the sudden, violent shaking of the ground caused by the release of energy in the Earth’s crust
12. a piece of lithosphere that has a unique geologic history
13. the single, large ocean that covered Earths surface during the time of pangea
14. the process by which new oceanic lithosphere forms as magma rises to Earth's sureface
15. the boundary between tectonic plates that are moving away from each other
17. boundary between tectonic plates that are sliding past each other horizontally
19. supercontinent that formed 300 million years ago
20. landmasses were once connected but drifted apart

1. the theory that explains how large pieces of the lithosphere move
2. the relatively thin part of the earth's crust which underlies the ocean basins
4. the process by which a continent breaks apart
5. boundary between tectonic plates that are colliding
6. a long, undersea mountain chain, forms as magma rises
7. the study of magnetic properties of rocks
9. the solid, outer layer of the earth
10. an extremely hot mixture of molten and semi-molten rock
16. 'plastic' rock
18. divided landmasses that broke apart to form the present continents