Plate Tectonics

2. a sudden and violent shaking of the ground, sometimes causing great destruction
6. the most outer layer of the earth
9. a planar structure or discontinuity in a volume of rock
10. the formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges
11. a fault-bounded area or region with a distinctive stratigraphy, structure, and geological history
12. scientific theory that explains how major landforms are created as a result of Earth's subterranean movements
15. the splitting apart of a single tectonic plate into two or more tectonic plates separated by divergent plate boundaries.
17. a stack of originally planar surfaces, that are bent or curved during permanent deformation
19. an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates
21. hot fluid or semifluid material below or within the earth's crust
22. the hypothesis that the Earth's continents have moved over geologic time relative to each other
23. a mountain range resulting from dissection of a structure

1. A tectonic boundary where two plates are moving toward each other
3. a fault along a plate boundary where the motion is predominantly horizontal.
4. the rigid outer part of the earth, consisting of the crust and upper mantle.
5. the upper layer of the earth's mantle, below the lithosphere
7. two plates are moving away from each other
8. the quasi-periodic aggregation and dispersal of Earth's continental crust
13. the equilibrium that exists between parts of the earth's crust
14. the process which affects the shape, size, or volume of an area of the crust of the earth
16. a change in shape or size resulting from applied forces
18. the central, innermost, or most essential part
20. ancient super-continent that included most of earth's land mass