Earthquakes
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| This type of fault is created by compressional forces and causes rocks to move upward. | Reverse fault
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| The point below earth's surface where earthquakes originate. | Focus
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| The paper record of a seismic event. | seismogram
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| The point on earth's surface directly above the earthquakes focus. | epicenter
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| Describes the strength of an earthquake based on the height of the waves on a seismogram. Measured in decimals. | Richter Scale
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| Seismic wave that moves particles back and forth in same direction the wave travels. | Primary wave
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| The measure of the energy released during an earthquake. | magnitude
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| Vibrations produced when rocks break. | earthquake
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| Instrument used to measure an earthquake and record the arrival times of P and S waves. | seismograph
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| This type of fault is created by tension forces and causes the rock to move downward. | normal fault
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| Weak places in earth's crust where rocks break because they have reached their elastic limit. | faults
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| Faults created by shear forces that cause rocks to slide past one another. | strike-slip fault
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| The waves generated by an earthquake are called _____ waves. | seismic
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| The seismic wave that moves rock at right angles to the direction of the wave. | secondary wave
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| The seismic wave that moves rock up and down, and side to side in a swaying motion. | surface wave
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| Measures the intensity and damage that an earthquake caused. It is measured in roman numerals from I to VII. | Mercalli Scale
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| Occurs during an earthquake when wet soil behaves more like a liquid. | liquifcation
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| Seismic sea wave that begins over an earthquake focus that occurs in oceanic crust. | tsunami
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| Primary waves travel the _____ and arrive at the seismograph station _____. | fastest; first
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| Secondary waves travel _____ and arrive at the seismograph station ______. | slower; second
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| Surface waves travel _____ and are the most _____. | slowest; destructive
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Created by:
brechbillc
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