Plate Tectonics

4. The movement of tectonic plates which then causes the ground to rapidly move in a wave motion.
8. The molten rock under the earths surface.
9. A deep trench in the ocean that goes much further than the bottom of the sea floor.
10. When continents drift around the ocean after separating.
12. The crust that is formed on the sea floor.
14. A theory that the Earth has cracked and split into many different pieces the move around.

1. Molten rock that has erupted into the earths surface.
2. An instrument that detects the seismic waves from an earthquake.
3. When new crusts form, spreading outwards around the ocean ridges.
5. When the continents break of and float around the sea.
6. The shaking, wave motion movement on the ground when an earthquake happens.
7. The point of the earths surface straight above the focus of an earthquake.
11. A places where hot material from inside the Earth erupts at the surface.
13. The crust is sinking down into the earth.
15. A huge wave that occurs from an earthquake on the sea floor.