Chapter 8

2. Earth's surface is made up of rigid slabs of rock that move with respect of each other.
4. The upward vertical motion of the Earth's surface.
7. Enormous splits in Earth's crust.
10. A change in the shape of rock caused by stress.
13. Flat regions with high elevations.
14. A curved line of volcanoes that form parallel to a plate boundary.
17. Made of layers of rocks that are folded.
18. When large regions rise vertically with very little deformation.
19. Made from layers of cooled molten rock and ash.
20. Stress that pulls something apart.

1. Deep, underwater troughs created by one plate subducting under another plate at a convergent plate boundary.
3. Where tectonic plates slide horizontally past each other.
5. The equilibrium between continental crust and the denser mantle below it.
6. Areas of subsidence and regions with low elevation.
8. Parallel ridges that form where blocks of crust move up or down along faults.
9. Parallel forces acting in opposite directions.
11. An extensive area of level or rolling land.
12. The downward vertical movement of the Earth's surface.
15. An area of many fractured pieces of crust along a large fault.
16. Squeezing stress.