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Online Quiz
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1
The amount of energy released by an earthquake is described by its
A)magnitude
B)intensity
C)duration
D)the type of damage that occurs
2
Seismic waves which travel only at the earth's surface
A)P-waves
B)S-waves
C)surface waves
D)all of the above
3
The first seismic wave arrival recorded on a seismogram is that of the
A)P-wave
B)S-wave
C)surface waves
D)tsunami
4
The most damaging by-product of a submarine earthquake is
A)ground subsidence
B)ground cracking
C)a tsunami
D)mass movements
5
If you were building a home in San Francisco, on what type of material would you build in order to minimize potential earthquake damage?
A)sand and gravel
B)bay mud
C)stream deposits
D)bedrock
6
Earthquakes occur most often here:
A)at Hot Spots such as Hawaii
B)in the interior of plates
C)at the boundaries between plates
D)along the Midatlantic Ridge
7
Most earthquake damage is usually caused by
A)construction on faults
B)mass wasting
C)ground cracking
D)ground shaking
8
This is a precursor of all earthquakes.
A)unusual animal behavior.
B)release of radon gas
C)changes in water levels in wells.
D)no universal precursor has yet been discovered.
9
Faults that lock or stick will
A)never produce earthquakes
B)creep slowly and produce only small earthquakes
C)accumulate strain until a large earthquake occurs
D)deform in a plastic fashion
10
Large earthquakes
A)always cause tsunamis
B)result from tectonic creep
C)result from plastic deformation
D)result from movement of previously locked faults
11
Earthquakes originate from the
A)epicenter
B)focus
C)fault scarp
D)all of the above
12
The effects of an earthquake on humans and their structures at a particular geographic location are described by
A)rate of tectonic creep
B)magnetic inclination
C)intensity
D)Richter magnitude
13
Where is it most likely that an earthquake will occur?
A)subduction zone
B)spreading center
C)seismic gap
D)transform fault
14
An earthquake of magnitude 6 releases this much more energy than one of magnitude 5:
A)10 times
B)100 times
C)20 times
D)30 times
15
S-waves are
A)compressional waves
B)longitudinal waves
C)shear waves
D)surface waves
16
P-waves are
A)compressional waves
B)transverse waves
C)shear waves
D)surface waves
17
The time elapsed between the arrivals of the P- and S-waves at a seismograph is in indication of the
A)magnitude
B)intensity
C)amount of ground motion
D)distance between the epicenter and the seismograph
18
A fault:
A)is a seismic gap
B)is a fracture along which offset has occurred.
C)is a fracture along which offset has not occurred.
D)is a special type of fold.
19
Which is used to aid prediction of earthquakes?
A)seismic gaps
B)precursor phenomena
C)earthquake cycle
D)all of the above
20
In the Midwest, which area is most likely to experience a strong earthquake?
A)northern Wisconsin
B)the Bootheel region of Missouri.
C)South Dakota
D)Minnesota
21
Earthquake belts are found along
A)coastlines.
B)river valleys.
C)plate boundaries.
D)epicenters.
22
A secondary effect that often causes more damage than ground shaking in urban areas is
A)sand boils.
B)fire.
C)seismic gaps.
D)ground cracks.
23
Ground shaking in areas with very wet ground can cause
A)p waves.
B)tsunami.
C)liquefaction.
D)aftershocks.
24
Earthquake cycles refer to
A)timing between p waves.
B)broad time intervals between earthquakes.
C)the duration of ground motion.
D)the number of years since the previous earthquake.
25
Earthquake intensity
A)is the same everywhere.
B)increases away from the epicenter.
C)increases away from the focus.
D)decreases away from the epicenter.





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