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Earthquakes

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    Earthquakes
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  • An earthquake of Richter magnitude _____ produces 100 times more ground shaking than an earthquake of magnitude _____?
    2,3
    3,1
    3,2
    3,4
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  • An earthquake of Richter magnitude _____ produces 100 times more ground shaking than an earthquake of magnitude _____?
    3,1
    3,4
    3,2
    2,3
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  • How does fire danger increase during earthquakes?
    Fallen debris can be flammable, & electrical wiring.
    Cities cannot afford enough firefighters to put them out.
    There is not enough water available during large earthquakes
    Cities cannot afford enough firefighters to stop them.
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  • Which of the following choices describes a tsunami?
    A huge sea wave resembling a large rising tide.
    Buildings and roads on the Earth's surface that are shaken
    A portion of the ground that loosens and slides downhill
    The shaking of the ground that liquefies water based soil
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  • What are the characteristics of an earthquake that make it so damaging?
    Cities can't afford to rebuild right away.
    Many cities do not have enough first responders.
    Landslides and mudslides caused by earthquakes.
    Earthquakes occur with little or no warning.
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  • Where is the epicenter of an earthquake found?
    Underground, where the rock is breaking.
    Underground, below the focus.
    Above ground, directly above the focus.
    About a mile away from the focus.
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  • Tsunamis are caused by earthquakes that occur _____.
    in the Earth's core
    in the plains
    in the mountains
    underwater
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  • The point underground where the earthquake occurs is called the:
    Epicenter
    Aftershock
    Foreshock
    Focus
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  • What does it mean to say that the Richter scale is logarithmic?
    Magnitude is doubled for each step
    There is ten-fold increase in ground shaking for each step
    Magnitude is cut in half for each step
    There is a ten-fold decrease for each step
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  • How does a magnitude 4 earthquake differ from a magnitude 8 earthquake in regard to energy?
    he magnitude 8 earthquake has 32,768 times energy
    The magnitude 8 earthquake has 128 times the energy
    The magnitude 8 has 1,048,576 times energy than the 4
    The magnitude 8 earthquake has 1,024 times the energy
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  • The movement of the ground due to rock breaking below the surface during an earthquake is known as _____.
    ground heave
    subsidence
    settlement
    seismic activity
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  • Why do earthquakes occur?
    Climate change
    Atmospheric pressure
    Stress builds up around fault lines
    Hurricanes
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  • Why can geologists not predict earthquakes?
    Earthquakes are man made, not natural.
    Activities along fault lines are unpredictable.
    Foreshocks often don't register on seismographs.
    Earthquakes depend on the weather, which is unpredictable.
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  • What can you expect to happen after experiencing an earthquake?
    You should expect to feel aftershocks.
    You can assume that geologists will be able to predict it.
    You can assume that there will be no more earthquakes.
    You should expect to feel foreshocks.
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  • The seismic waves that do most of the shaking are:
    Rayleigh
    Body
    Primary
    Love
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  • A _____ is a machine that produces (a) _____.
    seismograph, body wave
    seismogram, seismograph
    primary wave, secondary wave
    seismograph, seismogram
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