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When the earth shake
| Term | Definition |
|---|---|
| Fault | A fracture in bedrock , along which blocks of rock on opposite sides of fracture move. |
| intensity | A measure of the damage done by an earthquake that is determined on basis of the earthquake's effect on people |
| magnitude | A measure of the total amount of energy released at the focus of an earthquake. |
| destructive | Causing damage or injury |
| stress | The amount of force being applied to a rock or surface |
| tsunami | A series of sea waves caused by undersea events |
| seismogram | The record made by a seismograph |
| seismograph | An instrument used to detect earthquake waves |
| tension | Tension generally means a pulling force, strain, or mental/emotional stress. Its meaning varies by context: |
| compression | Compression generally means reducing size, volume, or amount by pressing, squeezing, or |
| shearing | to cut the hair or wool from. |