Vocab

2. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
4. where two plates are moving toward each other.
5. the solid, outer part of Earth
8. a factures or zone of fractures between two blocks of rocks
9. spot a large plume of hot mantle material rising from deep within the Earth.
11. Boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's
12. a line of mountains connected by high ground.
13. Crust the relatively thin part of the earth's crust which underlies the ocean basins.
16. created when tectonic plates slide past each other horizontally along strike-slip faults or transform faults.
17. along, narrow ditch.
18. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
19. the point on the earth's surface vertically above the focus of an earthquake.
21. plates that move slowly over the mantle layer.

1. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
3. a large continuous mass of land conventionally regarded as a collective region.
6. three-dimensional surface or zone across which there is a significant change in the velocity (speed or direction) of motion of one lithospheric plate relative to the adjacent lithospheric plate.
7. an opening in the earth's crust through which lava, volcanic ash, and gasses escape.
10. a line across a habitat or part of a habitat.
14. Crust the outermost layer of Earth's lithosphere that makes up the planet's continents
15. a supercontinent that incorporated almost all the landmasses on Earth.
20. Waves an elastic wave in the earth produced by an earthquake or other means.