Earthquakes S-Waves P-Waves Tsunami Richter scale Mercalli scale Crust Faults Epicenter Seismograph...

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Transcript of Earthquakes S-Waves P-Waves Tsunami Richter scale Mercalli scale Crust Faults Epicenter Seismograph...

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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