Plate Tectonics

4. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
5. A plate boundary where two plates move past each other in opposite directions
7. Point on Earth's surface directly above an earthquake's focus
8. A plate boundary where two plates move toward each other.
9. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
11. The German meteorologist who developed the theory of Continental drift.
12. Stress that stretches rock so that it becomes thinner in the middle.
13. The point beneath Earth's surface where rock first breaks under stress and causes an earthquake
14. a fracture or zone of fractures between two blocks of rock

1. The hypothesis that the continents slowly move across Earth's surface.
2. The shaking that results from the movement of rock beneath Earth's surface.
3. The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another.
4. Stress that pushes masses of rock in opposite directions, in a sideways movement.
6. A plate boundary where two plates move away from each other.
10. Stress that squeezes rock until it folds or breaks