PLATE TECTONICS

1. the process by which earths crust breaks apart; can occur with continental crust or oceanic crust
3. a break in a body of rock along with one block sides relative to another; a form of brittle strain
6. an instrument that records vibrations in the ground
7. any change in rocks shape or volume caused by stress
9. the process by which new oceanic lithosphere forms when magma rises to earths surface at mid ocean ridges and solidifies, as older, existing sea floor moves away from the ridge
14. in earths science,the amount of damage caused by an earthquake
16. the supercontinent that formed 300 million years ago and that and that began to break up 200 million years ago
17. a movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move
18. a tracing of earthquake motion that is recorded by a seismograph
20. a seismic wave that travels along the surface of a medium and that has a stronger effect near the surface of the medium than it has in the interior

2. a region of numerous closely spaced faults
4. a series of mountain that are closely related in orientation, age, and mode of formation
5. the location within earth along a fault at which the first motion of an earthquake occurs
8. a seismic wave that travels through the body of a medium
10. the sudden return of elastically deformed
11. a mountain that forms when rocks layers are squeezed together and uplifted
12. the theory that explains how large pieces of the lithosphere, called plates, move and change shape
13. magma that flows onto earths surface, the rock that forms when lava cools and solidifies
15. the amount of force per unit area that acts on a rock
19. liquid rock produced under earths surface
21. to its undeformed shape