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chap.six

QuestionAnswer
plate large section of earths crust and rigid upper mantle that moves around on the asthenosphere.
fault surface along which rocks move when they past thier elastic linit and break
earthquake vibrations produced when rocks break along 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 caused by compressive forces where rock above the fault surface moves upward relative to rock above the fault surface moves upward ralative to rock below the fault surface
strike slip fault break in rock caused by shear forces where rocks move past each otherwithout much vertical movement.
wave rhytimic movement that carries energy through matter and space
siesmic wave wave generated by an earthquake
faults in an earthquake the point below earths surface
primary wave seismic wave that moves rock particles at right angles to the direction ob of the wave
secondary eave seismic wave that moves rock particles at right angles to the direction on of the wave.
surface wave seismic wave that moves rock particles up and down in a backward rolloing motion and side to side in a swaying motion
epicenter point on earths surface directly above an earthquakes
seismograph instrument used to register earthquake waves and record the time that each arrived
crest highest point of waves
magnitude measure of the energy released during an earthquaje
liquefaction occurs when wet soil acts more like a liquid during an earthquake
tsunami seismic sea wave that begins over an earthquake focus and can be highly destructive when it crashes on shore.
Created by: jbeasl5153
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