Plate Tectonics

3. / a large mass of igneous rock in Earth's crust that, if exposed at the surface, covers an area of at least 100 km
6. Boundaries / the boundary at which two tectonics plates slide past one another horizontally
9. / the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle
13. / the soft layer of the mantle on which the tectonics plate move
15. / the layer of rock between Earth's crust and core
16. Terrane / a piece of lithosphere that becomes a part of a larger landmass when tectonic plates collide at
18. Drift / the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations

1. / a break in a body of rock along which one block slides relative to another
2. / machines that measure the time seismic waves take to travel various distance from an earthquake's center
4. Andreas Fault System / a transform plate boundary that California is home to
5. Boundaries / the boundaries at which two tectonic plates collide
7. / the central part of Earth below the Mantle
8. Boundaries / the boundary at which two tectonic plates separate
10. / single large continents, Greek for "all Earth"
11. / the process by which the shape of a rock changes in response to stress
12. Faults / when rocks are pushed together by compression, _______ ______ form
14. Faults / when rocks are moved horizontally by opposing forces, ______-____ ______ form
17. / the bending of rock layers due to stress
19. Faults / when rocks are pulled apart because of tension, ______ ______ is form