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17 Cards in this Set
- Front
- Back
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Earthquake |
Huge masses of rock along a fault strain againsts each other and then suddenly snap free, releasing a great amount of energy |
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Tectonic Earthquakes |
Sudden movement of rock beneath the earth's surface |
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Tremor |
Weak earthquake |
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Tsunamis |
Large earthquake near or beneath a body of water |
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Aftershocks |
Smaller earthquakes/tremors |
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Seismology |
The study of earthquakes |
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Seismologists |
Scientists who study earthquakes |
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Faulting |
Tectonic earthquakes are primarily the result of the sudden movement of rock masses along a fault |
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Elastic rebound theory |
Rocks on either side of a fault spring back to a position of little or no strain at the moment of an earthquake, triggering vibrations in the earth's crust |
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Fault scarp |
A short cliff |
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Sliken slides |
Rocks along a fault may be polished smooth by this motion, producing smoothed-faced fault |
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San Andreas Fault |
An example of an elastic rebound theory that happened in the western part of California |
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P waves |
Are also called primary waves, and they are the fastest waves |
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S waves |
Are also called secondary waves, and travel half the speed of of P waves |
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Surface waves |
When P & S waves reach the earth's surface generating a third seismic wave |
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Seismograph |
What scientists use to study & record vibrations caused by earthquakes |
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Seismogram |
A record produced by a seismograph |
