| A | B |
|---|
| Convergent- Collision Boundary | where two plates collide and create folded mountains, the force of compression |
| Convergent- Subduction Boundary | where two plates collide and one is forced underneath the other |
| Divergent Boundary | where two plates move apart forming rift valleys and mid-ocean ridges |
| Transform Boundary | where two plates slide past one another, the force of tension |
| Inner Core | Layer of iron and nickel that is solid due to intense heat and pressure |
| Outer Core | Layer of iron and some nickel in a liquid state |
| Mantle | semi-solid layer or molten rock, the thickest layer |
| Oceanic Crust | plates of basalt and gabbro, thin and dense |
| Continental Crust | plates of granite, thick and less dense |
| Asthenosphere | upper mantle layer |
