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Chapter 6Vocab6

Earthquakes

QuestionAnswer
plate a large section of earths crust and rigid upper mantle that moves around on the asthenosphere
fault surface along which rocks move when they pass there elastic limit and break
earthquake the vibration produced by the breaking of rock
normal fault rock above the fault surface moves downward in relation to rock below the fault surface
reverse fault rock above the surface is forced up and over the rock below the fault surface
strike-slip fault rocks on either side of the fault move past eachother without much upward or downward movement
wave rhythmic movement that carries energy through matter and space
seismic wave waves generated by earthquakes that travel through earth
focus the point where the seismic waves energy is released
primary wave cause particles in rocks to move back and forth in the same direction that the wave is traveling
secondary wave move through earth by causing particles in rocks to move at right angles to the direction of wave travel
surface waves move rock particles in a backward rolling motion and a side to side swaying motion
seismograph instrument used to register earthquake waves and record the time that each arrived
epicenter the point on earths surface directly above an earthquakes focus
crest the highest point of a wave
magnitude the measurement of energy released by a earthquake
liquefacation when earthquakes cause soil to act more like a liquid
tsunamis ocean waves caused by earthquakes
Created by: afrieb7987
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