Tectonic Activity

6. The theory that explains large pieces of the lithosphere called plates move and change shape.
9. This volcano buried Pompeii.
10. Landform that always forms above a subduction zone when magma from a melting plate rises.
11. Sinking process occurring around the Pacific Ring of Fire.
13. The solid outer layer of earth that consists of the crust and the rigid upper part of the mantle.
15. Section of the Earth below the crust.
16. The Theory of Continental _____________.

1. Scientist who first proposed the theory that the continents drifted.
2. When the ground shakes because of movement of plate boundaries.
3. Forms at an ocean-ocean convergent boundary.
4. A long, undersea chain that has a steep, narrow valley at its center and that creates new organic lithosphere as tectonic plates move apart.
5. Crust that always sinks at a convergent boundary.
7. Deepest part of the oceans.
8. Number of centimeters that average plates move in one year.
12. The Mid-Atlantic Ridge runs through this country.
14. "Surf's up" at this tectonic hot spot