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11 Cards in this Set
- Front
- Back
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Earthquake
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shaking and trembling that results from the sudden movement of part of the earth’s crust.
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Tsunamis
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giant sea wave produced by an earthquake. Tsunamis can travel at speeds of 700-899 kilos per hour. Heights of a tsunamis can get up to 20 meters high.
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Focus
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underground point of origin of an earthquake.
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Epicenter
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point on the earth’s surface directly above the focus of an earthquake.
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Seismic Wave
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shock wave produced by earthquakes that travels through the earth.
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Primary Waves
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the push-pull seismic wave that can travel through solids, liquids and gases. “P” waves are the fastest type of seismic wave.
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Secondary Waves
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a side-to-side earthquake wave which can travel through solids but not through liquids and gases. They are slower than “P” waves but faster than “L” waves.
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Surface (L) Waves
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Up-and –down earthquake wave. “L” waves are the slowest moving seismic waves.
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Seismograph
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instrument used to detect and record seismic waves produced by earthquakes.
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Seismogram
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record of seismic waves recorded by a seismograph.
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Richter Scale
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scale used to measure the strength of earthquakes.
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