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seesaw
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magnet
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fairy
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5
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25
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lifesaver
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15
×
What does it mean to say that the Richter scale is logarithmic?
There is ten-fold increase in ground shaking for each step
Magnitude is doubled for each step
Magnitude is cut in half for each step
There is a ten-fold decrease for each step
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baam
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rocket
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fairy
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25
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banana
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15
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An earthquake of Richter magnitude _____ produces 100 times more ground shaking than an earthquake of magnitude _____?
3,4
3,1
3,2
2,3
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15
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What are the characteristics of an earthquake that make it so damaging?
Cities can't afford to rebuild right away.
Earthquakes occur with little or no warning.
Many cities do not have enough first responders.
Landslides and mudslides caused by earthquakes.
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15
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What does the Richter scale measure?
The time and location an earthquake
The amount of ground shaking and energy of a volcano
The amount of ground shaking and energy released.
The number of houses that are damaged
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15
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Where is the epicenter of an earthquake found?
Above ground, directly above the focus.
About a mile away from the focus.
Underground, below the focus.
Underground, where the rock is breaking.
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15
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The seismic waves that do most of the shaking are:
Rayleigh
Love
Body
Primary
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15
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The magnitude of an earthquake is how _____.
much damage it does
big or strong it is
fast its waves travel
long it lasts
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A _____ is a machine that produces (a) _____.
seismograph, seismogram
seismograph, body wave
seismogram, seismograph
primary wave, secondary wave
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15
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How does a magnitude 4 earthquake differ from a magnitude 8 earthquake in regard to energy?
The magnitude 8 earthquake has 1,024 times the 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
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15
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The elastic rebound theory explains how:
The epicenter is directly above the focus.
Ground shaking causes faults to slip.
Body waves travel faster than surface waves.
Fault slipping causes ground shaking.
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15
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How does fire danger increase during earthquakes?
Cities cannot afford enough firefighters to put them out.
Fallen debris can be flammable, & electrical wiring.
There is not enough water available during large earthquakes
Cities cannot afford enough firefighters to stop them.
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15
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The movement of the ground due to rock breaking below the surface during an earthquake is known as _____.
ground heave
settlement
seismic activity
subsidence
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monster
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magnet
Take 20 points!
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fairy
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25
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lifesaver
Give 10 points!
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15
×
Which statement is FALSE about tectonic plates?
They make up the earth's crust.
They fit together like puzzle pieces.
They sit on top of a fluid part of earth's interior.
They have very specific movements.
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