| Term | Definition |
| Transform Boundaries | Plates scrape horizontally past eachother. |
| Transform Boundaries | Crust is neither formed nor destroyed |
| Divergent Boundaries | Plates move apart |
| Divergent Boundaries | Forms mid-ocean ridges |
| Divergent Boundaries | Forms rift valleys |
| Convergent Boundaries | Crust is destroyed where plates subduct |
| Convergent Boundaries | Folded where plates collide |
| Convergent Boundaries | Plates come together, to form mountains, or subduct |
| Mid-ocean ridge | Divergent Boundary |
| Volcanic island arc | Convergent Boundary |
| Mountains | Convergent Boundary |