Earthquake
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| Vibrations in the earth caused by the sudden movement of rock is called | earthquakes
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| The elastic rebound theory states that as a rock becomes stressed, it first | deforms
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| The point along the fault where an earthquake begins is called the | focus
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| The point on the earth's surface directly above the point where an earthquake begins is called the | epicenter
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| A characteristic of earthquakes that causes most severe damage is | a shallow focus
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| Most severe earthquakes occur | at plate boundaries
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| P waves travel through | both solids and liquids
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| S waves cannot pass through | the asthenosphere
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| The Richter scale expresses the earthquake's | magnitude
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| Most injuries in earthquakes are caused by | a collapse of buildings
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| If an earthquake stikes you while you are in a car, you should | stop the car in a clear space and remain in the car
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| A quake of lesser magnitude, usually one of a series, following a large earthquake in the same area | aftershock
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| A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity | earthquake
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| theory that rocks that are strained pass a certain point will fracture and spring back to their original shape | elastic rebound theory
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| The point of the earth's surface directly above the focus of an earthquake | epicenter
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| A point at which rays of light or other radiation converge or from which they appear to diverge, as after refraction or reflection in an optical system | focus
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| amount of damage caused by an earthquake | intensity
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| surface or long wave | L wave
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| scale that expresses the intensity of an earthquake with a Roman numeral and a discription | mercalli scale
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| primary wave | p wave
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| major earthquake zone that forms around the pacific ocean | Pacific ring of fire
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| scale that expresses the magnitude of an earthquake | richter scale
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| secondary wave | s wave
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| zone of rock in which a fault is locked and unable to move | seismic gap
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| An instrument for automatically detecting and recording the intensity, direction, and duration of a movement of the ground, especially of an earthquake | seismograph
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| A very large ocean wave caused by an underwater earthquake or volcanic eruption | tsunami
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Created by:
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