| A | B |
| Plate Tectonics | Pieces of Earth's lithosphere are in slow motion driven by convection currents in mantle |
| fault | breaks in earth's crust |
| 3 types of plate boundaries | transform, convergent, divergent |
| Divergent Boundary | when 2 plates move apart |
| rift valley | occurs when a divergent boundary occurs on land |
| convergent boundary | 2 plates come together |
| formation of mountains | 2 continental crust plates collide |
| transform boundary | 2 plates slip past each other, moving in opposite direction |
| Density of plates | more dense plate will sink below the less dense plate |