| A | B |
|---|
| continental crust | thicker, less dense type of crust |
| oceanic crust | thinner, more dense type of crust |
| plates | pieces of the Earth's crust |
| divergent boundary | point where two plates move away from each other |
| convergent boundary | point where two plates move towards each other |
| transform boundary | point where two plates slide past each other |
| earthquake | vibrations produced by the breaking of rock |
| normal fault | break in rock caused by tension forces, where rock above the fault surface moves down relative to the rock below the fault surface |
| reverse fault | break in rock caused by compression forces, where rock above the fault surface moves upward relative to the rock below the fault surface |
| strike-slip fault | break in rock caused by shear forces, where rocks move past each other without much vertical movement |
