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hikimah chapter 6

earthquakes

QuestionAnswer
a large section of earth's crust and rigid uper mantle that moves around on the asthenospere plate
surface along which rocks move when they pass their elastic limit fault
vibrating produced when rocks break along a fault earthquake
break in rock caused by tension forces, where rock above the fault surface moves down relative to the rock below the fault surface. normal fault
repeated echoes of sound waves reverse fault
break in rock caused by shear forces, where rocks move past each other without much vertical movement shike-slip fault
rhythmic movement that carries energy through matter and space wave
wave generated by an earthquake seismic wave
in earthquake the point below earth's surface where energy is released in the form of seismic waves focus
seismic wave that move rock particles back-and-forth in the same direction that the wave travels primary wave
secondary wave seismic wave that move rock particles at right angles to direction of the wave secondary wave
seismic wave that moves rock partices up-and-down in a backward rolling and side-to-side in a swaying motion surface wave
point on earth's surface diretly above an earthquak's focus epicenter
instrument used to register earthquake waves and record the time each arrived seismograph
measure of the enegy released during an earthquake magnitude
occurs when wet soil acts more like a liquid during an eathquake liquefaction
seismic sea wave that begins over an earthquake focus and can be highly destrctive when it crashes on shore tsunami
the highest point of a wave crest
Created by: mukumtagarah
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