plate tectonics

2. The sudden energy release that goes with the fault
3. below the lower mantle; made mostly of molten metallic material such as nickel and iron.
5. Boundary is formed where two plates slide sideways past each other.
9. A mountain with a crater on top through which lava, rock fragments flow.
10. a crack in Earth’s crust along which movement can take place or has taken place.
12. The outermost layer of the Earth.
13. Boundary is formed when two tectonic plates move away from each other
14. Boundary is formed when two tectonic plates collide together.
16. The molten portion of the Earth's innermost layer.
17. A sudden and violent shaking of the ground resulting from movements of the Earth's crust.
18. In liquid form because of extreme heating:
19. The thick layer of the Earth's interior that lies between the thin outer layer (the crust) and the super-heated core.
20. the point on Earth's surface directly above the focus

1. The Border between two tectonic plates.
4. The rigid outer part of the Earth, made up of the crust and the upper mantle.
6. The sideways and downward movement of the edge of a plate beneath another plate.
7. The solid metal center of the Earth's innermost layer.
8. Large-scale processes that affect the Earth's surface.
11. Ancient supercontinent that incorporated most of the land mass on Earth and which broke into two smaller supercontinents.
15. Hot molten rock that erupts from a volcano or fissure.