Question 1

Which of the following events released the most energy?

Accepted Answer

A)  the eruption of Mount St.Helens
B)  the explosion of the Hiroshima atomic bomb
C)  the 1964 Alaska earthquake
D)  All of the above released similar amounts of energy.E) A) and B)
F) All of the above

Question 2

What type of faulting would be least likely to occur along the mid-Atlantic ridge?

Accepted Answer

A)  normal faulting
B)  reverse faulting
C)  strike-slip faulting
D)  Normal,reverse,and strike-slip faulting are all likely to occur.E) C) and D)
F) None of the above

Question 3

The energy released during a magnitude 8 earthquake is approximately ______ times larger than the energy released during a magnitude 6 earthquake.

Accepted Answer

A)  two
B)  10
C)  100
D)  1000E) B) and D)
F) B) and C)

Question 4

Which of the following locations would be most likely to generate an earthquake magnitude 9 or higher?

Accepted Answer

A)  Iceland
B)  Hawaii
C)  Sumatra
D)  United StatesE) B) and D)
F) None of the above

Question 5

Whether a building will withstand ground shaking during an earthquake depends on

Accepted Answer

A)  the engineering of the building.
B)  the intensity of the ground shaking.
C)  the material on which the building was built.
D)  the engineering of the building,the intensity of the ground shaking,and the material on which the building was built.E) B) and C)
F) A) and D)

Question 6

What is the maximum amount of slip on a fault during an earthquake?

Accepted Answer

A)  approximately 1 meter
B)  approximately 20 meters
C)  approximately 100 meters
D)  approximately 200 metersE) A) and B)
F) A) and C)

Question 7

A fault line long-term slip rate of 5 cm/year and slips 2.5 m when it moves.What is the recurrence interval of the fault?

Accepted Answer

A)  10 years
B)  50 years
C)  100 years
D)  1000 yearsE) A) and B)
F) A) and C)

Question 8

As a rule of thumb aftershocks are typically ____ order(s) of magnitude ____ than the mainshock.

Accepted Answer

A)  1; higher
B)  1; lower
C)  2; higher
D)  2; lowerE) None of the above
F) A) and D)

Question 9

Modern seismographs can measure displacements the width of a(n)

Accepted Answer

A)  street.
B)  hand.
C)  hair.
D)  atom.E) A) and D)
F) A) and C)

Question 10

Which of the following statements best describes the current state of earthquake prediction?

Accepted Answer

A)  Scientists can accurately predict the time and location of almost all earthquakes.
B)  Scientists can accurately predict the time and location of approximately 50 percent of all earthquakes.
C)  Scientists can accurately predict when an earthquake will occur,but not where.
D)  Scientists cannot accurately predict most earthquakes.E) B) and C)
F) None of the above

Question 11

With respect to earthquakes,a building code refers to

Accepted Answer

A)  the design of seismographs.
B)  building material.
C)  building design.
D)  building strength.E) All of the above
F) B) and D)

Question 12

The costliest earthquake in recorded history occurred in

Accepted Answer

A)  China.
B)  Chile.
C)  California.
D)  Japan.E) All of the above
F) A) and D)

Question 13

Analysis of fault mechanisms indicates ___________ at divergent boundaries and _______ at transform boundaries.

Accepted Answer

A)  compression; tension
B)  shear; compression
C)  tension; shear
D)  shear; tensionE) None of the above
F) A) and B)

Question 14

The largest earthquakes occur at

Accepted Answer

A)  transform boundaries.
B)  intraplate settings.
C)  convergent boundaries.
D)  divergent boundaries.E) B) and C)
F) A) and D)

Question 15

Fault mechanisms at subduction zones are called

Accepted Answer

A)  megathrusts.
B)  reverse thrusts.
C)  compressional faults.
D)  megafaults.E) All of the above
F) A) and C)

Question 16

The amount of ground displacement in an earthquake is called the

Accepted Answer

A)  dip.
B)  epicenter.
C)  focus.
D)  (fault) slip.E) B) and D)
F) A) and C)

Question 17

Which of the following earthquakes was the largest recorded earthquake?

Accepted Answer

A)  1906 San Francisco,California
B)  1960 Chile
C)  1923 Tokyo,Japan
D)  1976 Tangshan,ChinaE) All of the above
F) A) and D)

Question 18

Which of the following measurements collected from seismograph stations gives scientists information regarding the type of faulting that occurred during an earthquake?

Accepted Answer

A)  the amount of slip
B)  the amplitude of the ground shaking
C)  the first motion of the P waves
D)  the time interval between the arrival of the P and S wavesE) C) and D)
F) A) and B)

Question 19

How long was the ground rupture created during the San Francisco earthquake of 1906?

Accepted Answer

A)  4 m
B)  40 m
C)  400 m
D)  4000 mE) A) and D)
F) A) and C)

Question 20

The modified Mercalli intensity scale measures

Accepted Answer

A)  the amount of destruction caused by an earthquake.
B)  the amount of slip on a fault plane caused by an earthquake.
C)  the amplitude of the surface waves.
D)  the type of seismic wave in an earthquake.E) A) and B)
F) A) and C)

Exam 13: Earthquakes

The energy released during a magnitude 8 earthquake is approximately ______ times larger than the energy released during a magnitude 6 earthquake.

Correct AnswerverifiedShow Answer

How long was the ground rupture created during the San Francisco earthquake of 1906?

Correct AnswerverifiedShow Answer

The modified Mercalli intensity scale measures

Correct AnswerverifiedShow Answer

Which of the following measurements collected from seismograph stations gives scientists information regarding the type of faulting that occurred during an earthquake?

Correct AnswerverifiedShow Answer

Analysis of fault mechanisms indicates ___________ at divergent boundaries and _______ at transform boundaries.

Correct AnswerverifiedShow Answer

Which of the following locations would be most likely to generate an earthquake magnitude 9 or higher?

Correct AnswerverifiedShow Answer

Modern seismographs can measure displacements the width of a(n)

Correct AnswerverifiedShow Answer

Which of the following earthquakes was the largest recorded earthquake?

Correct AnswerverifiedShow Answer

Which of the following statements best describes the current state of earthquake prediction?

Correct AnswerverifiedShow Answer

The costliest earthquake in recorded history occurred in

Correct AnswerverifiedShow Answer

The largest earthquakes occur at

Correct AnswerverifiedShow Answer

As a rule of thumb aftershocks are typically ____ order(s) of magnitude ____ than the mainshock.

Correct AnswerverifiedShow Answer

Which of the following events released the most energy?

Correct AnswerverifiedShow Answer

What is the maximum amount of slip on a fault during an earthquake?

Correct AnswerverifiedShow Answer

The amount of ground displacement in an earthquake is called the

Correct AnswerverifiedShow Answer

What type of faulting would be least likely to occur along the mid-Atlantic ridge?

Correct AnswerverifiedShow Answer

A fault line long-term slip rate of 5 cm/year and slips 2.5 m when it moves.What is the recurrence interval of the fault?

Correct AnswerverifiedShow Answer

With respect to earthquakes,a building code refers to

Correct AnswerverifiedShow Answer

Whether a building will withstand ground shaking during an earthquake depends on

Correct AnswerverifiedShow Answer

Fault mechanisms at subduction zones are called

Correct AnswerverifiedShow Answer

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Analysis of fault mechanisms indicates _____ at divergent boundaries and _ at transform boundaries.

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As a rule of thumb aftershocks are typically order(s) of magnitude than the mainshock.

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