Plate Tectonics

3. The scientist who first proposed the theory of Continental Drift.
8. A vent in the crust through which lava and gases erupt.
9. A deep depression in the ocean floor caused by a subducting plate.
10. The thick layer of hot, solid rock between the crust and the core.
11. The outermost chemical layer of the Earth.
12. A valley formed by the separation of continental plates.
13. The process in the mantle that acts as the driving force for plate movement.
15. A fracture in the Earth's crust where significant movement has occurred.
16. The process where one plate sinks beneath another into the mantle.
17. The bottom of the ocean where new crust is formed at ridges.
18. The type of boundary where two tectonic plates move apart.

1. The supercontinent that existed approximately 300 million years ago.
2. The study of the movement and deformation of Earth’s crust.
4. Sudden shaking of the ground caused by movement along a fault.
5. The type of boundary where two tectonic plates collide.
6. An area of volcanic activity caused by a plume of magma rising from the mantle.
7. Molten rock located beneath the Earth's surface.
14. The type of boundary where two plates slide past each other horizontally.