Plate Tectonics

2. Global Positioning System
6. A break in a body of rock along which one block slides relative to another
7. A thinner and denser crust than continental crust
8. The central part of the Earth below the mantle
9. When rocks are pushed together by compression
11. The thin and solid outermost layer of he Earth above the mantle
12. The strong, lower part of the mantle between the asthenosphere and the outer core
13. A block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
14. Stress that occurs when forces act to stretch an object
15. The bending of rock layers due to stress
17. The rising of regions of the Earth's crust to higher elevations
18. A thicker and less dense crust than oceanic crust
19. The solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle

1. The soft layer of the mantle on which the tectonic plates move
3. The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
4. The process my which new oceanic lithosphere forms as magma, and rises toward the surface and solidifies
5. The sinking of regions of the of the Earth's crust to lower elevations
8. Stress that occurs when forces act to squeeze an object
10. When rocks are pulled apart because of tension
16. The layer of rock between the Earth's crust and core