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17 Cards in this Set
- Front
- Back
Tremor that follows and is smaller than a major earthquake
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Aftershock
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Vibration of the Earth’s crust
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Earthquake
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Theory that rocks that are strained past a certain point
will fracture and spring back to their original shape. |
Elastic Rebound Theory
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Point on the Earth’s surface directly above the focus of an
earthquake. |
Epicenter
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Group of interconnected faults
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Fault Zone
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Area along a fault at which slippage first occurs, initiating an
earthquake. |
Focus
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Amount of damage caused by an earthquake.
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Intensity
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A measure of the energy released by an earthquake; described as the
amount of ground motion. |
Magnitude
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Scale that expresses the intensity of an earthquake with a Roman
numeral and a description. |
Mercalli scale
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Earthquake with a magnitude less than 2.5 on the Richter
scale. |
Microquake
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Primary wave; the fastest Wave generated by an earthquake and the first
to be recorded by a seismograph. |
P Wave
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Major earthquake zone that forms a ring around the
Pacific Ocean. |
Pacific Ring of Fire
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Secondary wave; a wave generated by an earthquake and the second to
be recorded by a seismograph. |
S Wave
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Zone of rock in which a fault is locked and unable to move and in
which no major earthquake has occurred for a long period of time. |
Seismic Gap
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Instrument used to detect and record seismic waves.
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Seismograph
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The slowest moving seismic wave generated by an earthquake and
the last to be recorded by a seismograph. |
Surface Wave
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Giant ocean wave that often occurs after a major earthquake with an
epicenter on the ocean floor. |
Tsunami
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