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Kramer, Chap. 5

Kramer Earth Processes, Chapter 5

QuestionAnswer
Vibrations produced when rocks break along a fault Earthquake
Point on Earth's surface directly above an earthquake's focus Epicenter
Surface along which rocks move when they pass their elastic limit and break Fault
In an earthquake, the point below Earth's surface where energy is released in the form of seismic waves Focus
Occurs when wet soil acts more like a liquid during an earthquake Liquefaction
Measure of the energy released during an earthquake Magnitude
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
Seismic wave that moves rock particles back-and-forth in the same direction that the wave travels Primary wave
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
Seismic wave that moves rock particles at right angles to the direction of the wave Secondary wave
Wave generated by an earthquake Seismic wave
Instrument used to register eqrthquake waves and record the time that each arrived Seismograph
Break in rock caused by shear forces, where rocks move past each other without much vertical movement Strike-slip fault
Seismic wave that moves rock particles up-and-down in a backward rolling motion and side-to-side in a swaying motion Surface wave
Seismic sea wave that begins over an earthquake focus and can be hightly destructive when it crashes on shore Tsunami
Created by: marilyn.kramer
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