Plate Tectonics

5. The place where two or more plates in the Earth's crust meet.
8. The rigid outer part of the Earth, which includes the crust and upper mantle.
9. An area where magma from the mantle melts through the crust and erupts at the Earth's surface, often creating volcanoes.
12. The layer of the Earth thats located in the very middle.
13. The theory that the Earth's crust is broken into a number of slowly moving plates.
15. When a lithospheric plate collides and forced under another plate, often directed back into the Earth's mantle.
16. Where two plates move towards each other, causing collisions, mountain building, or subduction.
18. Where two plates slide past eacho other, often causing earthquakes.
19. The layer of rock between the crust and the outer core.
20. A theory introduced by Alfred Wegener that the land had split off from eachother and slowly moved across the earth's surface to form the continents we see today.

1. An opening in the Earth's curst that allows magma and gases to escape.
2. A break in the Earth's crust caused by rocks that have slipped and ruptured.
3. Shaking of the Earth that occurs from sudden movement of rock beneath its surface.
4. Occurs when two tectonic plates run into eachother.
6. Where two plates move away from each other, causing new crust.
7. Heat transfer by the movement of heated parts of a liquid or gas within the mantle, which drives the movement of tectonic plates.
10. The process at divergent boundaries where new oceanic crust is formed.
11. The weaker layer of he mantle on which the tectonic plates float.
14. The outer layer of the Earth's surface.
17. Molten rock beneath Earth's surface.