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lois Chp. 6

worddefinition
faults surface along which rocks move when they pass their elastic limit break.
plate a large section of earths crust & rigid upper mantle that moves around on the athenosphere
earthquakes vibrations produced when rocks break along the fault
normal fault break in rock caused by forces, where rock above the fault surface moves down 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
reverse fault break in rock caused by compressive forces, where rock above the fault surface moves upward realtive to the rock below the fault surface
wave rhythmatic movement that carries energy through matter & space
seismic wave wave generated by an earthquake
surface wave sesimic wave that moves rock particles up & down in a backward rolling motion & side to side in a swaying motion
secondary wave seismic wave that moves rock particles at a right angel to the dirrection of the wave
seismicograph intrument used to register earthquake waves & record the time that each wave arrives
focus in an earthquake, the point below earths surface where the energy is released in the form of seismic waves
epic center point on earths surface directly above an earthquakes focus
primary wave seismic wave that moves rock particles back & forth in the same direction that the wave travels
crest thte highest point of wave
magnitude measure of the energy released during an earthquake
liquefaction the shacking from an earthquake causing soil to act likeliquid
tsunamis ocean waves caused by earthquakes & are called seismic waves
Created by: lrhee3042
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