Plate Tectonics

2. hard, outermost layer of the earth
5. an act of changing physical location
7. a line that marks the limits of an area
8. region of the interior of the earth between the core and the crust
11. the rigid outer part of the earth, consisting of the crust and upper mantle
12. a thin, flat sheet or strip of a material
13. a section of the crust of the earth that moves relative to each other
15. upper layer of the earth's mantle
16. a system of ideas intended to explain something
19. a mountain or hill having a vent which lava is being erupted from the earth's crust

1. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance
3. to go in a different direction
4. the hypothetical landmass that existed when all continents were joined
6. oceanic tectonic plate that lies beneath the Pacific Ocean
9. to slide past
10. a sudden and violent shaking of the ground
14. coming closer together
17. long, narrow hilltop, or mountain range
18. the remains of a prehistoric organism preserved in petrified form
20. the central portion of the earth