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plate rigid upper mantle that moves around on the asthenosphere
fault surface along which rocks move when they pass their elastic limit
earthquake vibrations produced when rocks break along a fault
normal fault break in rock caused by tension forces where rock moves down
reverse fault break in rock caused by compresion forces and it moves upward
strike-slip fault break in rock caused by shear forces and they move past each other
wave rythmic movement of energy
seismic wave wave generated by an earthquake
focus the point below earths surface where energy is released
primary wave seismic waves that moves rock particles back and forth
secondary wave seismic waves that moves rock particles at a right angle
surface wave seismic waves that move up and down and side to side`
epicenter point directly above focus
seismograph instrument used to register earthquake waves
crest highest point of a wave
Created by: nils