Science Vocab

1. The breaking of Earth's crust
3. The center of the earth.
5. The theory that earths out layer is on tectonic plates
6. The outermost physical layer
7. When one plate moves beneth another
9. A movement or trembling of the ground that is caused by a sudden release of energy
11. The physical layer that includes the lower mantle
13. The theory that all land was once one big part.
15. The process by which new organic lithosphere forms when magma rises to Earth's surface at mid-ocean ridges
18. A block of lithosphere that consists of the crust and the rigid, outermost part of the layer.
19. The point on Earth’s surface directly above an earthquake's starting point
20. Where the first motion of an earthquake happens
21. The edge between two or more techtonic plates
22. The thin layer of mantel below the lithosphere

1. The boundary between two tectonic plates that are moving away from each other
2. The boundary between tectonic plates that are colliding
4. The middle compisitional layer
8. An idea to explain observations with evidence from scienticic investigation
10. The boundary between tectonic plates that are sliding past each other horizontally
12. The return of rock to its orignal position
13. Movement of matter due to difference in density
14. The outermost compisitional layer
16. When earths magnetic poles switch
17. Were rock moves relative to another