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chp 6 vocab bailey b

QuestionAnswer
plate a large section of earths crust and ridged upper mantle that moves around on the asthenosphere
fault surface alongwhich rocks move when they pass thier elastic limit and break
earthquake vibrations produced when rocks break aong 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 the rock below the fault surface
strike-slip fault break in rock caused by shear forces, when rocks move past each other without much vertical movement
wave rythmic movement that carries enery through matter and space
seismic wave wave generated by an earthquake
focus in an earthquake, the point belopw earths surface where energy is released in the form of a seismic wave
primary wave seismic wave that moves rock particles back and forth in the same direction that the wave travels
surface wave seismic wave that moves rock particles up-and-down in a backward rolling motion and side-to-side in a swaying motion
epicenter point on earths surface directly above an earthquakes focus
seismograph instrumentr used to register earthquake waves and record the time that each arrived
crest the highest point of a wave
magnitude measure of the energy released durning an earthquake
liquefaction occurs when wet soil acts more like liquid during an earthquake
tsunami seismic sea wave that begins over an earthquake focus and can be highly destructive when it crashes ashore
Created by: team g
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