Question 1

Body waves include ____________.

Accepted Answer

A)   both S- and P-waves
B)   both L- and R-waves
C)   both surface and interior waves
D)   P-waves only

Question 2

Which earthquake intensity scale assesses the effects of an earthquake on humans and human-made structures?

Accepted Answer

A)   Richter scale
B)   Mercalli scale
C)   moment-magnitude scale

Question 3

An earthquake occurs with an epicenter in the town of New Madrid,Missouri,in the interior of the North American Plate.Where might the hypocenter of this earthquake plausibly be found?

Accepted Answer

A)   in New Madrid ("hypocenter" and "epicenter" mean precisely the same thing) 
B)   10 km south of New Madrid
C)   20 km beneath New Madrid
D)   200 km beneath New Madrid

Question 4

Short-term predictions of earthquake behavior ____________.

Accepted Answer

A)   have saved millions of lives in the past decade alone
B)   have been largely unreliable
C)   are primarily based on the behavior patterns of farm animals
D)   are correct approximately 50% of the time

Question 5

A primary force opposing motion on all faults is ____________.

Accepted Answer

A)   magnetic attraction among iron-rich minerals
B)   gravity
C)   friction
D)   Van der Waals force

Question 6

Virtually all of the deaths attributed to major earthquakes have resulted from the collapse of buildings.

Accepted Answer

A) True 
 B)False

Question 7

Earthquakes that occur in a band called a ____________ can be used to track the motion of subducted oceanic lithosphere.

Accepted Answer

A)   Wegener belt
B)   seismic gap
C)   Wadati-Benioff zone

Question 8

The point on Earth's surface directly above the point where an earthquake occurs is termed the ____________.

Accepted Answer

A)   hypocenter (focus) 
B)   epicenter
C)   eye of the fault
D)   vertex

Question 9

Long-term prediction of earthquake behavior ____________.

Accepted Answer

A)   is based on past earthquake activity
B)   works on the principle that zones of past seismicity will be active in the future
C)   includes the notion of seismic gaps-places where an earthquake is "overdue"
D)   all of the above

Question 10

A surface along which rock on opposed sides is offset by earthquake-induced slip is called a ____________.

Accepted Answer

A)   joint
B)   fault
C)   fold
D)   wall

Question 11

Intermediate and deep earthquakes occur along ____________.

Accepted Answer

A)   convergent plate boundaries only
B)   divergent plate boundaries only
C)   transform plate boundaries only
D)   all three major types of plate boundaries

Question 12

How many seismic stations are necessary to find the epicenter of an earthquake?

Accepted Answer

A)   one
B)   two
C)   three
D)   four

Question 13

Which earthquake severity scale takes into account the type of rock that has been fractured?

Accepted Answer

A)   Richter scale
B)   Mercalli scale
C)   moment-magnitude scale

Question 14

The greatest earthquake ever recorded by seismographs occurred in 1960 in Chile and measured ____________ on the moment-magnitude scale.

Accepted Answer

A)   9.0
B)   9.5
C)   10.0
D)   10.5

Question 15

The intersection between a fault plane and the ground surface is called the ____________.

Accepted Answer

A)   dip line
B)   plunge
C)   fault trace
D)   seismic interface

Question 16

Which earthquake severity scale varies from locality to locality for a single earthquake?

Accepted Answer

A)   Richter scale
B)   Mercalli scale
C)   moment-magnitude scale

Question 17

If,during an earthquake,a hanging wall slides upward relative to a footwall,the fault is termed ____________ if the fault is shallow (much closer to horizontal than vertical) .

Accepted Answer

A)   normal
B)   reverse
C)   strike-slip
D)   thrust

Question 18

If a fault is nearly vertical in orientation and the two walls of rock on opposite sides slide past one another horizontally,the fault is termed ____________.

Accepted Answer

A)   normal
B)   reverse
C)   strike-slip
D)   thrust

Question 19

Earthquakes are likely to occur along ____________.

Accepted Answer

A)   convergent plate boundaries only
B)   divergent plate boundaries only
C)   transform plate boundaries only
D)   all three major types of plate boundaries

Question 20

At any point along the surface of an oblique (nonvertical) fault,the ____________.

Accepted Answer

A)   hanging wall lies vertically above the footwall
B)   footwall lies vertically above the hanging wall
C)   hanging wall lies to the left of the footwall
D)   footwall lies to the left of the hanging wall

Exam 8: A Violent Pulse: Earthquakes

If,during an earthquake,a hanging wall slides upward relative to a footwall,the fault is termed ____________ if the fault is shallow (much closer to horizontal than vertical) .

Correct AnswerverifiedShow Answer

Which earthquake intensity scale assesses the effects of an earthquake on humans and human-made structures?

Correct AnswerverifiedShow Answer

If a fault is nearly vertical in orientation and the two walls of rock on opposite sides slide past one another horizontally,the fault is termed ____________.

Correct AnswerverifiedShow Answer

At any point along the surface of an oblique (nonvertical) fault,the ____________.

Correct AnswerverifiedShow Answer

How many seismic stations are necessary to find the epicenter of an earthquake?

Correct AnswerverifiedShow Answer

The intersection between a fault plane and the ground surface is called the ____________.

Correct AnswerverifiedShow Answer

Virtually all of the deaths attributed to major earthquakes have resulted from the collapse of buildings.

Correct AnswerverifiedShow Answer

Body waves include ____________.

Correct AnswerverifiedShow Answer

Earthquakes that occur in a band called a ____________ can be used to track the motion of subducted oceanic lithosphere.

Correct AnswerverifiedShow Answer

Short-term predictions of earthquake behavior ____________.

Correct AnswerverifiedShow Answer

Earthquakes are likely to occur along ____________.

Correct AnswerverifiedShow Answer

Which earthquake severity scale varies from locality to locality for a single earthquake?

Correct AnswerverifiedShow Answer

Long-term prediction of earthquake behavior ____________.

Correct AnswerverifiedShow Answer

An earthquake occurs with an epicenter in the town of New Madrid,Missouri,in the interior of the North American Plate.Where might the hypocenter of this earthquake plausibly be found?

Correct AnswerverifiedShow Answer

A surface along which rock on opposed sides is offset by earthquake-induced slip is called a ____________.

Correct AnswerverifiedShow Answer

The point on Earth's surface directly above the point where an earthquake occurs is termed the ____________.

Correct AnswerverifiedShow Answer

The greatest earthquake ever recorded by seismographs occurred in 1960 in Chile and measured ____________ on the moment-magnitude scale.

Correct AnswerverifiedShow Answer

Intermediate and deep earthquakes occur along ____________.

Correct AnswerverifiedShow Answer

Which earthquake severity scale takes into account the type of rock that has been fractured?

Correct AnswerverifiedShow Answer

A primary force opposing motion on all faults is ____________.

Correct AnswerverifiedShow Answer

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