 | Term | Definition |
| |
Earthquake |
A movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move. |
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Elastic Rebound |
The sudden return of elastically deformed rock to its undeformed shape. |
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Focus |
The location within earth along a fault at which the first motion of an earthquake occurs |
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Epicenter |
The point on earths surface directly above an earthquakes starting point, or focus |
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Surface Wave |
In geology, A seismic wave that travels along the surface of medium and that has a stronger effect near the surface of the medium than it has in the interior |
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Body Wave |
In geology ,a seismic wave that travels through the body of a medium |
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P Wave |
A primary wave that causes particles of rock to move in a back and fourth direction to the direction in which the wave is traveling |
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S Wave |
A secondary wave that causes rock to move in a side to side direction in which the wave is traveling |
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Shadow Zone |
An area on Earths surface where no direct seismic waves from a particular earthquake can be detected |
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Fault Zones |
A region of numerous, closely spaced faults |
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Seismograph |
An instrument that records vibrations in the ground |
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Seismogram |
A tracing of earthquake motion that is recorded by a seismograph |
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Magnitude |
A measure of the strength of an earthquake. |
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Intensity |
In earth science, the amount of damage caused by an earthquake |
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Tsunami |
A giant ocean wave that forms after a volcanic eruption, submarine earthquake, or landslide |
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Seismic Gap |
An area along a fault where relatively few earthquakes have occurred recently but where strong earthquakes are known to have occurred in the past |
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Moment magnitude |
is a measurement of earthquake strength based on the size of the area the fault that moves |
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Mercalli Scale |
expresses intensity in Roman numerals from from 1 to 12 and provides a description of the effects of each earthquake intensity |
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Richter Scale |
measures the ground motion from an earthquake to find the earthquakes strength. |
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Love waves |
cause rock to move side to side and perpendicular to the direction in which it is traveling |
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Rayleigh wave |
cause the ground to move with an elliptical, rolling motion |
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