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| Stress that stretches rock so that it becomes thinner in the middle. |
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| Stress that squeezes rock until it folds or breaks. |
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| A force that acts on rock to change its shape or volume. |
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| Stress that pushes a mass of rock in two opposite dirtections. |
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| Tension in earths crust pulls rock apart. |
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| The block of rock that lies above the noraml fault. |
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| The rock that lies below the hanging wall. |
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| The same structure as a normal fault. |
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| Rocks on either side of the fault slip past each other sideways. |
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| A fold in rock that bends upward into arch. |
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| A fold in rock that bends downward to form a valley. |
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| A large flat area of flat land elevated high above sea level. |
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| Shaking and trembling that results from the movement of rock beneath earths surface. |
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| the area beneath earths surface where Rock is under stress breaks, triggering a earthquake. |
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| The point on the surface directly above the focus. |
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| They move more slowly than p waves and s waves. |
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| Developed tp rate earthquakes according to the level of damage. |
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| A number or sign to earthquakes based on the size. |
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| rating of an earthquakes magnitude based on size of the seismic waves. |
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| What seismic wave are measrured by. |
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| Rating system that estimates the total energy released by an earthquake. |
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Definition
| The record of earthquakes seismic waves produced by a seismograph. |
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| Force that opposes the motion of one surface as it moves across another surface. |
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| Occurs when an earthquakes violent shaking suddenly turns loose, soft soil into liqiud mud. |
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| Is is an earthquake that occursafter a larger earthquake in the same area. |
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| The water displaced by the earthquake may form a large wave called a tsunami. |
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| Is a designed to reduce the amount of energy that reaches the building during an earthquake. |
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