Plate Tectonics

2. a crack in the earth's crust
3. a boundary formed where plates slip past each other
8. the process in which dense crust sinks below less dense crust
9. the shaking that results form the movement of rock beneath earth's surface
10. the process that adds new crust to the seafloor
11. a boundary formed where plates move away from each other
13. the rigid layer of the Earth that includes the crust and uppermost part of the mantle
14. a type of heat transfer that occurs in the mantle
16. a feature that forms where two continental crustal plates move away from each other

1. a theory that explains the movement of plates due to convection currents
4. a feature formed at a divergent boundary where new crust is added to the ocean floor
5. a boundary formed where plates collide
6. the fluid layer of the mantle on which the lithosphere floats atop
7. an explanation for how things work that is well supported with evidence and can change with new evidence
12. a weak spot in the crust where magma has come to the surface
15. a deep underwater canyon formed where oceanic crust subducts