| A | B |
|---|
| *Stress | a force that acts on rock to change its shape or volume. |
| *Tension | the stress pulls on the crust ,stretching rock so that it becomes thinner in the middle |
| compression | the stress squeezes rock until it folds or break. |
| Shearing | stress that pushes a mass of rock in two opposite directions . |
| Normal fault | one rock is above the fault and one rock is below. |
| hanging wall | the block of rock that lies above |
| Footwall | the block of rock that below |
| Reverse fault | In places where the rock of the crust is pushed together ,compression . |
| Strike – slip faults | In places where plates move past each other. |
| anticline | a fold in rock that bends upward into an arch |
| Syncline | a fold in rock that bends downwards to form a valley |
| Plateau | large area of flat land elevated high above sea level |
