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Eliezer Chap 6

Earthquakes

QuestionAnswer
Plate A large section of Earth's crust and rigid upper mantle that moves around on the. asthenosphere
Fault Surface along which rocks move when they pass their elastic limit and break.
Earthquakes Vibrations produced when rocks break along 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 by compressive forces,where rock above the fault surface moves upward relative to the rock below the fault surface.
Strike-slip Fault Break in caused by shear forces,where rocks move past each other without much vertical movement.
Seismic Wave Wave generated by an earthquake.
Focus In an earthquake,the point below Earth's surface where energy's released in the form of seismic waves.
Primary Wave Seismic wave that moves rock particles back-and-forth in the same direction that the waves travels.
Secondary Wave Seismic wave that moves rock particles at right angles to the direction of the wave.
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 Earth's surface directly above
Seismograph
Wave
Crest
Magnitude
Liquefaction
Tsunami
Created by: Eliezer14
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