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earthquakes vocab
14 words to study
| Question | Answer |
|---|---|
| stress | a force that acts on an area of rock to change its shape or volume |
| tension | a type of stress that pulls on the crust |
| compression | a type of stress that squeezes rock until it folds or breakes |
| shearing | stress that pushes a mass of rock in two opposite directions |
| fault | a break in the rock of the crust where rock surfaces slip past eachother. |
| earthquake | the shaking that results from the sudden movement of rock along a fault |
| focus | the area beneath earths surface where rock that is under stress breaks triggering an earthquake. |
| epicenter | the point on the surface directly above the focus. |
| siesmic waves | vibration that travel through earth carrying the energy released during an earthquake |
| magnitude | a number that geologist assign to an earthquake based on the earthquake's size. |
| richer scale | assigns a magnitude number to an earthquake based on the size of siesmic waves. |
| siesmograph | an instroment that records and measures siesmic waves. |
| aftershocks | an earthquake that occures after a larger earthquake in the same area. |
| tsunami | earthquakes that form a large wave from the water. |
Created by:
alikat
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