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zach ch.6

vocab

QuestionAnswer
plate a large section of earth's crust and rigid upper mantle the moves around on the astherosphere
fault surface along which rocks move when they pass their elastic limit and break.
earthquake vidrations produced when rocks break a fault
normal fault break in rock caused by tension forces, where rock above the fault surface moves down relative to the rock below the fault surface.
reverse fault break in rock by compressive forces,where rock above the fault surface moves upward relative to the rock below the fault surface
strike-slip fault break in rock caused by shear forces, where rocks move past each other without much vertical movement.
wave rthythmic movement that carries enelox through matter and space.
seismic wave wave generated by an earthquake
focus in a earthquake, the point below earth's surface where energy is released in the form of seismic waves
primary wave seismic wave that moves rock particles back-and-forth in the same direction that the wave travels
secondary wave move through earth by causing particles in rocks to move at right angles to the direction of wave travel.
surface wave move rock prticles in a backward, rolling motion and a side-to-side, swaying motion.
epicenter is the point on erath's surface directly above the earthquake focus.
seismograph instrument used to register earthquake waves and record the time that each arrived.
crest the highest point of a wave
magnitude maesure of the enegy released buring an earthquake
liquefaction occurs when wet acts more like a liquid during an earthquake
tsunami seismic sea wave that beigins over an earthquake forcus and can be highly destructive when it crashes on shore.
Created by: monkeyfighter
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