| A | B |
|---|
| earthquake | the shaking that results from the movement of rock beneath Earth's surface |
| plateau | a large area of flat land elevated high above sea level |
| 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 |
| hanging wall | the block of rock that forms the upper half of a fault |
| footwall | the block of rock that forms the lower half of a fault |
| reverse fault | a type of fault where the hanging wall slides upward |
| fault-block mountain | a mountain that forms where a normal fault uplifts a block of rock |
| fold | a bend in rock that forms where part of Earth's crust is compressed |
| anticline | an upward fold in rock formed by compression of Earth's crust |
| syncline | a downward fold in rock formed by compression in Earth's crust |
| stress | a force that acts on rock to change its shape or volume |
