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Q2-7 Faults (Types, Forces, Effects and Stress)

AB
StressA force that acts on a rock to change its shape or volume
tensionStress force that pulls on the crust
Normal fault, Fault caused by tension forces
Reverse fault, Fault in rock caused by compression forces
Strike-slip fault, Rocks on either side of fault slip past each other
S-Waves (secondary waves), motion is perpendicular to the direction of wave propagation
SeismographAn instrument that detects and measures seismic waves
focusThe area beneath Earth's surface where rock that is under stress breaks, triggering an earthquake.
epicenterThe point on the surface above the focus.
earthquake, , Audio Shaking of earth that results from the movement of rock beneath Earth's surface.
Richter scaleRating of earthquake magnitude based on size of seismic waves.
P-Waves (Primary waves)Seismic waves that compress and expandthe ground.
A Strike-Slip Fault or earthquake is likely to occur on atransform boundary
A Normal Fault is likely to occur on adivergent boundary
A Reverse Fault is likely to occur on aconvergent boundary
The focus of an earthquake is wherethe movement occurred below the surface, possible even as deep down as the mantle
The epicenter of an earthquake ison the surface directly above where the earthquake occurred
tension stress ispulling apart
shearing stress istwo parts being torn in opposite directions


“Somewhere, something incredible is waiting to be known.” Carl Sagan

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