Plate Tectonics

3. crust The outer layer of the earth
7. A number of crustal plates
11. The shaking wave like movement of the ground in an earthquake
13. A place where extremely hot material from inside the earth erupts at the surface
14. A long narrow trench in the ocean.
15. An opening made by a splitting, cleaving etc

1. Two plates colliding and making one plate
2. crust The crust that forms the ocean floor
3. drift The continents on earth moving around
4. molten rock that has erupted onto earths surface
5. An underwater earthquake that makes the wave so powerful it smashes through buildings
6. molten rock below earths surface
8. The rapid movement of the ground usually back and forth and up and down in a wave motion due to the movement of tectonic plates
9. An instrument that detects the seismic waves from an earthquake.
10. spreading A process in which a new ocean floor is created
12. The point on the earths surface directly above the focus of an earthquake