Question 1

The point on the 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.E) None of the above
F) A) and B)

Question 2

Which geological setting would you NOT expect to produce a large amount of seismic activity?

Accepted Answer

A)   a rift valley
B)   a transform boundary
C)   a collisional mountain belt
D)   the interior of a tectonic plateE) None of the above
F) B) and D)

Question 3

Periods of intermittent sliding on a fault because of stress release during episodes of slip,followed by stress buildup to the point that the fault is reactivated,are termed

Accepted Answer

A)   chaotic faulting.
B)   thrust faulting.
C)   stick-slip behavior.
D)   reverse faulting.E) C) and D)
F) B) and C)

Question 4

If an earthquake's magnitude is measured based on the Richter scale,how is this abbreviated?

Accepted Answer

A)   ML
B)   MS
C)   mb
D)   MRE) None of the above
F) A) and B)

Question 5

Which of the following hazards is most likely to occur days to weeks after an earthquake?

Accepted Answer

A)   fire
B)   liquefaction
C)   disease
D)   foreshocksE) None of the above
F) A) and B)

Question 6

At a minimum,how many seismic stations are necessary to locate the epicenter of an earthquake?

Accepted Answer

A)   one
B)   two
C)   three
D)   fourE) All of the above
F) B) and C)

Question 7

Which of the following is NOT true about tsunamis?

Accepted Answer

A)   They can be generated by uplift of the seafloor during an earthquake.
B)   They can be generated by submarine landslides.
C)   They are just as dangerous away from the coast where water depths are great.
D)   They grow taller as they approach coastlines because friction slows the wave.E) B) and C)
F) A) and D)

Question 8

At any point along the surface of any nonvertical fault,as is shown in the figure below,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.E) C) and D)
F) B) and C)

Question 9

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.E) A) and B)
F) A) and C)

Question 10

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 a ________ fault.Refer to the figure below for an example of such a feature.

Accepted Answer

A)   normal
B)   reverse
C)   strike-slip
D)   thrustE) None of the above
F) A) and C)

Question 11

Look at the figure below.Which letter corresponds to the S-wave arrival time?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) B) and D)
F) All of the above

Question 12

Why is an empty field the safest place to be in an earthquake?

Accepted Answer

Ground motion alone is very unlikely to ...

Question 13

Explain why tsunamis are NOT tidal waves.

Accepted Answer

Tsunamis are created by large displaceme...

Question 14

Which type of seismic wave has the fastest velocity?

Accepted Answer

A)   L-wave
B)   P-wave
C)   R-wave
D)   S-waveE) C) and D)
F) None of the above

Question 15

Where do earthquakes occur? Please explain your answer in the context of plate tectonics.Are there exceptions?

Accepted Answer

Earthquakes tend to occur along plate bo...

Question 16

As shown in the figure below,a coiled spring would be useful in illustrating any ________ wave.

Accepted Answer

A)   surface
B)   body
C)   shear
D)   compressionalE) None of the above
F) B) and C)

Question 17

Earthquake waves that travel along the Earth's surface are termed

Accepted Answer

A)   interior waves.
B)   S-waves.
C)   surface waves.
D)   body waves.E) A) and C)
F) A) and B)

Question 18

Faulting and earthquakes are examples of ________ and generally occur when rocks are relatively ________.

Accepted Answer

A)   brittle deformation; cold
B)   ductile deformation; cold
C)   brittle deformation; hot
D)   ductile deformation; hotE) A) and B)
F) A) and D)

Question 19

Generally,which type of earthquake waves travel with the slowest velocity?

Accepted Answer

A)   S-waves
B)   P-waves
C)   surface waves
D)   All earthquake waves travel at the same speed.E) A) and C)
F) A) and B)

Question 20

Which earthquake scale is used to assess the effects of an earthquake on humans and human-made structures?

Accepted Answer

A)   Richter scale
B)   Mercalli scale
C)   moment magnitude scale
D)   surface-wave magnitude scaleE) A) and C)
F) A) and B)

Exam 10: A Violent Pulse: Earthquakes

Explain why tsunamis are NOT tidal waves.

Correct AnswerverifiedTsunamis are created by large displaceme...View AnswerShow Answer

Which geological setting would you NOT expect to produce a large amount of seismic activity?

Correct AnswerverifiedShow Answer

At any point along the surface of any nonvertical fault,as is shown in the figure below,the

Correct AnswerverifiedShow Answer

Periods of intermittent sliding on a fault because of stress release during episodes of slip,followed by stress buildup to the point that the fault is reactivated,are termed

Correct AnswerverifiedShow Answer

Why is an empty field the safest place to be in an earthquake?

Correct AnswerverifiedGround motion alone is very unlikely to ...View AnswerShow Answer

Short-term predictions of earthquake behavior

Correct AnswerverifiedShow Answer

Generally,which type of earthquake waves travel with the slowest velocity?

Correct AnswerverifiedShow Answer

Faulting and earthquakes are examples of ________ and generally occur when rocks are relatively ________.

Correct AnswerverifiedShow Answer

Which type of seismic wave has the fastest velocity?

Correct AnswerverifiedShow Answer

At a minimum,how many seismic stations are necessary to locate the epicenter of an earthquake?

Correct AnswerverifiedShow Answer

Which earthquake scale is used to assess 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 a ________ fault.Refer to the figure below for an example of such a feature.

Correct AnswerverifiedShow Answer

Earthquake waves that travel along the Earth's surface are termed

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Look at the figure below.Which letter corresponds to the S-wave arrival time?

Correct AnswerverifiedShow Answer

Where do earthquakes occur? Please explain your answer in the context of plate tectonics.Are there exceptions?

Correct AnswerverifiedEarthquakes tend to occur along plate bo...View AnswerShow Answer

Which of the following hazards is most likely to occur days to weeks after an earthquake?

Correct AnswerverifiedShow Answer

Which of the following is NOT true about tsunamis?

Correct AnswerverifiedShow Answer

If an earthquake's magnitude is measured based on the Richter scale,how is this abbreviated?

Correct AnswerverifiedShow Answer

As shown in the figure below,a coiled spring would be useful in illustrating any ________ wave.

Correct AnswerverifiedShow Answer

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Tsunamis are created by large displaceme...
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Ground motion alone is very unlikely to ...
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Faulting and earthquakes are examples of and generally occur when rocks are relatively .

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Earthquakes tend to occur along plate bo...
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