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12 Cards in this Set
- Front
- Back
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earthquake
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movement of ground when rocks inside Earth pass elastic limit, break suddenly and experience elastic rebound
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fault
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fracture when rocks break and there is movement
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epicenter
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point on Earth's surface directly above the focus
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magnitude
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measure of energy released by earthquake
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seismic wave
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earthquake waves: primary, secondary, surface
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focus
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point deep inside Earth where energy is released causing an earthquake
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seismograph
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instrument used to record seismic waves
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tsunami
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powerful seismic sea wave that begins with an earthquake over the ocean floor
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seismic safe
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ability of structures to stand up against vibrations of an earthquake
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normal fault
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pulling apart; tension happens at divergent boundaries
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reverse fault
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compressed together; moves up; happens at convergent boundaries
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strike slip fault
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happens at transform boundaries; shear force; moves side to side
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