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when the earth shake
| fault | a fracture in bedrock, along which block of rock on opposite side of the fracture move. |
| intensity | to increase the intensity, force, or power of something. |
| 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 forces being applied to a rock or surface |
| tsunami | a series of sea waves caused by underseas events, such as an earthquake beneath the ocean floor,that rises to great heights as they near a shore |
| seismogram | the record made by a seismogram the paper on Which data about earthquake waves is recorded |
| seismograph | an instrument used to detect earthquake waves |
| tension | a force along the length of a medium, especially a force carried by a flexible medium, such as a rope or cable |
| compression | the act of pressing or squeezing something together to reduce its volume, size, or density, making it more compac |
| shearing | to cut the hair or wool from |