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Multiple Choice Quiz
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1
The elastic rebound theory:
A)explains folding of rocks.
B)explains the behavior of seismic waves.
C)explains the origin of earthquakes.
D)none of these
2
The point within the Earth where seismic waves originate is the:
A)focus.
B)origin.
C)fault scarp.
D)epicenter.
3
The minimum number of seismic stations needed to locate an earthquake is:
A)1
B)3
C)2
D)8
4
The Richter Scale is used to determine the:
A)number of casualties in an earthquake.
B)damage from an earthquake.
C)magnitude of an earthquake.
D)intensity of an earthquake.
5
Benioff Zones are associated with:
A)mid-ocean ridges.
B)subduction zones.
C)ancient mountain chains.
D)all of these
6
Most earthquakes at divergent plate boundaries are:
A)deep focus.
B)intermediate focus.
C)shallow focus.
D)all of these
7
Most earthquakes at convergent boundaries are:
A)deep focus.
B)shallow focus.
C)intermediate focus.
D)range from shallow to deep focus
8
A zone of shallow earthquakes occurring along normal faults is typical of:
A)transform plate boundaries.
B)convergent plate boundaries.
C)divergent plate boundaries.
D)none of these
9
A seismic gap is:
A)a large chasm opened by an earthquake.
B)the center of a tectonic plate where earthquakes rarely occur.
C)a segment of an active fault where earthquakes have not occurred for a long time.
D)the time between large earthquakes.
10
Which of the following is characteristic of a tsunami?
A)very low amplitude in the open ocean
B)very fast moving in the open ocean.
C)very long wavelength in the open ocean.
D)all of these
11
The fastest seismic waves are:
A)Love Waves
B)Rayleigh Waves
C)S-waves
D)P-waves
12
Tsunami waves may move faster than
A)P-waves
B)S-waves
C)2000 km/hr
D)800 km/hr
13
The first motion of an earthquake detected at a seismic station (is):
A)meaningless in the analysis of earthquakes.
B)varies depending on the earthquake location relative to the seismic station.
C)always dilatational.
D)always compressional.
14
Analyses of earthquake first motions are useful for:
A)determining the depth of an earthquake.
B)determining the style of faulting that caused an earthquake.
C)determining the magnitude of an earthquake.
D)determining the location of an earthquake.
15
Analyses of seismograph records cannot provide information on:
A)the depth of the earthquake.
B)the number of fatalities in an earthquake.
C)the location of the earthquake.
D)the magnitude of the earthquake.
16
Which of the following states has a significant seismic hazard?
A)Arkansas
B)Tennessee
C)California
D)all of these
17
The process of fluidizing water-saturated soil during an earthquake is known as:
A)gelatinization.
B)quick sand.
C)liquefaction.
D)none of these
18
Among the secondary effects of large earthquakes are:
A)fires.
B)landslides.
C)tsunamis.
D)all of these
19
Which of the following areas is most likely to experience a large magnitude earthquake?
A)southern Australia
B)Arctic Canada
C)eastern Brazil
D)southern California
20
Seismic waves that pass through the Earth's interior, spreading out from the focus in all directions are called:
A)Body waves
B)Refracted waves
C)Surface waves
D)X-waves





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