Earthquakes
S-Waves
P-Waves
Tsunami
Richter scale
Mercalli scale
Crust
Faults
Epicenter
Seismograph
Earthquakes
Thanks to Science probe 2 Book! And http://www.usgs.gov
Faults
Fault: A crack in a rock body along which there has been some movement.
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Crust
Crust: Comparatively thin, outermost, solid layer of the Earth.
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Tsunami
Tsunami: A large sea wave usually trigged by an earthquake on the sea floor.
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Richter scale
Richter scale: A scale of earthquake magnitude, based on seismograph recordings, that is a measure of the amount of energy released from an earthquake.
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S-Waves
S-Waves: Move more slowly than a P-Wave, it is the second wave to arrive.
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P-Waves
P-Waves: are the first wave to arrive at a seismograph.
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Mercalli scale
Mercalli scale: A scale of earthquake intensity based on observation of the effect produced by ground motion.
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Epicenter
Epicenter: A location on the surface of the Earth directly above the point (focus) where an earthquake.
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Seismograph
Seismograph: A mechanical instrument used to measure ground motion graphically: usually measures motion form earthquakes.
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