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Alyssa Chapter 6

Earthquakes

QuestionAnswer
a large section of Earth's crust and rigid upper mantle that moves around on the asthenosphere plate
surface along which rocks move when they pass their elastic limit and break fault
vibrations 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
break in rock caused by compressive forces, where rock above the fault surface move upward relative to rock below the fault surface reverse fault
break in rock caused by shear forces where rocks move past each other without much vertical movement strike-slip fault
rhythmic movement that caries energy through matter and space wave
wave generated by an earthquake seismic wave
in an earthquake, the point below earth's surface where energy is released in the form of seismic waves focus
seismic wave that moves rock particles back and forth in the same direction that the wave travels primary wave
seismic wave that moves rock particles at right angles to the direction of the wave secondary wave
seismic wave that moves rock particles up-and-down in a backward rolling motion and side-to-side in a swaying motion surface wave
point on Earth's surface directly above an earthquake's focus epicenter
instrument used to register earthquake waves and record the time that each arrived seismograph
the highest point of a wave crest
measure of the energy released during and earthquake magnitude
occurs when wet soil acts more like a liquid during an earthquake liquefaction
seismic sea wave that begins over an earthquake focus and can be highly destructive when it crashes on shore tsunami
Created by: southcutie4
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