| A | B |
|---|
| earthquake | The shaking that results from the movement of rock beneath Earth's surface. |
| stress | A force that acts on rock to change its shape or volume. |
| shearing | Stress that pushes a mass of rock in opposite directions. |
| tension | Stress that stretches rock so that it becomes thinner in the middle. |
| compression | Stress that squeezes rock until it folds or breaks. |
| deformation | A change in the volume or shape of Earth's crust. |
| fault | A break in Earth's crust where slabs of rock slip past each other. |
| strike-slip fault | A type of fault where rocks on either side move past each other sideways with little up or down motion. |
| normal fault | A type of fault where the hanging wall slides downward; caused by tension in the crust. |
