| A | B |
|---|
| Protuberance of the earth’s crustal shell | continent |
| Internal forces of the earth. | diastrophism |
| Created by the tension. | normal fault |
| Ground displacement\movement. | earthquake |
| Created by compression | reverse fault |
| Large, rigid, mobile land mass | plate |
| Amount of energy released | magnitude |
| origin of an earthquake | focus |
| Area above the focus | epicenter |
| Occurs before the main earthquake | foreshock |
| Study of Earthquakes | seismology |
| Horizontal movement of the crust | thrust |
| Occurs after the main quake | aftershock |
| soft layer of mantle | asthenosphere |
| outer layer of the earth | crust |
