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Online Quiz
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1

What determines the magnitude of an earthquake?
A)the amount of energy released by the movement of the rocks
B)the depth of the focus
C)the type of plate boundary where it occurs
D)the amount of damage
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 originate in the
A)lithosphere
B)mantle
C)inner core
D)all of the above
7

Most earthquake damage is usually caused by
A)construction on faults
B)mass wasting
C)ground cracking
D)ground shaking
8

Which is a precursor of an earthquake?
A)ground tilting
B)drop in the water table level
C)radon gas release from rocks
D)all of the above
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 are measured as the
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

The amount of ground shaking in a magnitude 4 earthquake is
A)twice as much as in a magnitude 2 earthquake
B)ten times as much as in a magnitude 2 earthquake
C)100 times as much as in a magnitude 2 earthquake
D)1000 times as much as in a magnitude 2 earthquake
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

What is formed by rupture of rock?
A)a fold
B)a seismic gap
C)a fault
D)all of the above
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)southern Illinois
C)South Dakota
D)Minnesota





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