Plate Tectonics

3. a type of seismic wave that forms when P waves and S waves reach Earth's surface
4. an undersea mountain chain where new ocean floor is produced; a divergent plate boundary
6. a plate boundary where two plates move toward each other
10. a type of seismic wave that compresses and expands the ground
11. the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary
12. a type of fault where the hanging wall slides downward; caused by tension in the crust
13. stress that pushes masses of rock in opposite directions, in sideways movement
14. stress that stretches rock until it becomes thinner in the middle

1. a type of fault where the hanging wall slides upward; caused by compression in the crust
2. a type of seismic wave that moves the ground up and down or side to side
3. a type of fault in which rocks on either side move past each other sideways with little up or down motion
5. a deep valley that forms where two plates move apart
7. a plate boundary where two plates move past each other in opposite directions
8. a plate boundary where two plates move away from each other
9. stress that squeezes rock until it folds or breaks