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Chapter 6 Vocab(:

Earthquakes

QuestionAnswer
Surface along which rocks move when they pass their elasric limit and break FAULT
A large section of Earth's crust and rigis upper mantle that moves around on the athenosphere PLATE
Vibrations produced when rocks break along the 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 moves upward relative to the rock below the fault surface REVERSE FAULT
Break in rock caused by shear forces, where rocks move past each other without much verticle movement STRIKE-SLIP FAULT
Rythmic movement the carries energy throught mater and space WAVE
Wave generated by a earthquake SEISMIC WAVE
In an earthquake, the point below Earth's surface were energy is relaesed 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 waying motion SURFACE WAVE
Point on Earth's surface directly above an earthquakes focus EPICENTER
Instrument used to register earthquake waves and record the time that each one arrived SEISMOGRAPH
Highest point in a wave CREST
measure of the energy released during an earthquake MAGNITUDE
occurs when wet soil acts more like a liquid during an earthquake LIQUEFACTION
Seismic sea wave the begins over an earthquake focus and can be highly desturctive when it crashes onto shore TSUNAMI
Created by: aedwin9504
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