Question 1

A brittle deformation

Accepted Answer

A)   is a shattering motion that occurs at a fault.
B)   is a break that occurs at a relatively small strain.
C)   is a plastic deformation that occurs under high pressure.
D)   is a deformation that may reverse to its original form.E) A) and D)
F) All of the above

Question 2

According to the elastic rebound theory, what may occur before a major earthquake?

Accepted Answer

A)   minor shocks
B)   deformation of rock in shear directions and bending rock
C)   deformation and bending of rock into anticlines
D)   deformation and bending of rock into synclinesE) None of the above
F) B) and C)

Question 3

Grabens are:

Accepted Answer

A)   blocks of crust jostled upward along normal faults.
B)   blocks of crust jostled downward along normal faults.
C)   blocks of crust jostled left along normal faults.
D)   blocks of crust jostled right along normal faults.E) A) and B)
F) B) and C)

Question 4

Which action would geologists take in order to determine the Richter magnitude of an earthquake?

Accepted Answer

A)   analyze seismic instrument readouts
B)   take core samples at several spots and from different distances from the epicenter
C)   assess financial costs of rebuilding roads, buildings, and public areas in the quake zone
D)   interview people who experienced the quakeE) B) and D)
F) All of the above

Question 5

Earthquake damage occurs when

Accepted Answer

A)   stress exceeds strain of materials.
B)   stress exceeds strength of materials.
C)   strain exceeds strength of materials.
D)   strength exceeds strain of materials.E) B) and C)
F) A) and D)

Question 6

Horsts are:

Accepted Answer

A)   blocks of crust jostled upward along normal faults.
B)   blocks of crust jostled downward along normal faults.
C)   blocks of crust jostled left along normal faults.
D)   blocks of crust jostled right along normal faults.E) A) and C)
F) B) and D)

Question 7

How do we know why some rocks break and others flow?

Accepted Answer

"At different combinations of stress and...

Question 8

Evaluate this statement: "Earthquake damage depends primarily on the magnitude of the quake."

Accepted Answer

A)   This statement is true.
B)   This statement is true, but earthquake damage also depends on the proximity to the epicenter and the characteristics of materials through which the earthquake passes.
C)   This statement is false; the most important factor in earthquake damage is the quality of building materials used.
D)   This statement is false; the most important factor in earthquake damage is the location's proximity to the epicenter.E) None of the above
F) A) and D)

Question 9

What do deformed rocks look like?

Accepted Answer

"Before considering the forces that defo...

Question 10

What is the amplitude in an earthquake?

Accepted Answer

the measur...

Question 11

The Modified Mercalli Intensity Scale is a quantitative measure of an earthquake.

Accepted Answer

A) True 
 B)False

Question 12

Oil and gas, like groundwater, move through pore spaces in rock.

Accepted Answer

A) True 
 B)False

Question 13

Faults that show a combination of dip-slip and strike-slip movement are

Accepted Answer

A)   reverse faults.
B)   strike-dip faults.
C)   oblique-slip faults.
D)   diagonal-strike faults.E) A) and C)
F) A) and B)

Question 14

Thrust faults are formed by horizontal movement along the strike direction of the fault plane.

Accepted Answer

A) True 
 B)False

Question 15

Choose the option that correctly orders the fluids from the one that sits at the bottom of a sandstone reservoir to the one that is closest to the low-porosity shale at the top of the reservoir.

Accepted Answer

A)   oil, gas, water
B)   gas, water, oil
C)   water, gas, oil
D)   gas, oil, waterE) B) and C)
F) A) and D)

Question 16

Arched folds where limbs dip toward the hinge line are called

Accepted Answer

A)   synclines.
B)   reclines.
C)   anticlines.
D)   inclines.E) B) and C)
F) All of the above

Question 17

Deformation under low stress, below yield strength, is often

Accepted Answer

A)   elastic.
B)   plastic.
C)   irreversible.
D)   compressive.E) C) and D)
F) All of the above

Question 18

How do you describe folded rocks?

Accepted Answer

"Rocks commonly dip in opposite directio...

Question 19

Currently, what is the best method for predicting earthquakes within the crucial 2 hour time period?

Accepted Answer

The answer of Currently, what is the best method for...

Question 20

The Richter magnitude is based on

Accepted Answer

A)   the amount of damage caused.
B)   the maximum amplitude recorded.
C)   the difference in arrival times of S and P waves.
D)   the distance from the epicenter.E) A) and C)
F) C) and D)

Exam 11: Deformation of Rocks

According to the elastic rebound theory, what may occur before a major earthquake?

Correct AnswerverifiedShow Answer

Which action would geologists take in order to determine the Richter magnitude of an earthquake?

Correct AnswerverifiedShow Answer

Faults that show a combination of dip-slip and strike-slip movement are

Correct AnswerverifiedShow Answer

Evaluate this statement: "Earthquake damage depends primarily on the magnitude of the quake."

Correct AnswerverifiedShow Answer

Currently, what is the best method for predicting earthquakes within the crucial 2 hour time period?

Correct AnswerverifiedShow Answer

How do we know why some rocks break and others flow?

Correct Answerverified"At different combinations of stress and...View AnswerShow Answer

Horsts are:

Correct AnswerverifiedShow Answer

Arched folds where limbs dip toward the hinge line are called

Correct AnswerverifiedShow Answer

Earthquake damage occurs when

Correct AnswerverifiedShow Answer

Deformation under low stress, below yield strength, is often

Correct AnswerverifiedShow Answer

What is the amplitude in an earthquake?

Correct Answerverifiedthe measur...View AnswerShow Answer

The Richter magnitude is based on

Correct AnswerverifiedShow Answer

Grabens are:

Correct AnswerverifiedShow Answer

Thrust faults are formed by horizontal movement along the strike direction of the fault plane.

Correct AnswerverifiedShow Answer

Oil and gas, like groundwater, move through pore spaces in rock.

Correct AnswerverifiedShow Answer

How do you describe folded rocks?

Correct Answerverified"Rocks commonly dip in opposite directio...View AnswerShow Answer

What do deformed rocks look like?

Correct Answerverified"Before considering the forces that defo...View AnswerShow Answer

A brittle deformation

Correct AnswerverifiedShow Answer

The Modified Mercalli Intensity Scale is a quantitative measure of an earthquake.

Correct AnswerverifiedShow Answer

Choose the option that correctly orders the fluids from the one that sits at the bottom of a sandstone reservoir to the one that is closest to the low-porosity shale at the top of the reservoir.

Correct AnswerverifiedShow Answer

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"At different combinations of stress and...
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the measur...
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Correct Answer
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Correct Answer
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"Rocks commonly dip in opposite directio...
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"Before considering the forces that defo...
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Correct Answer
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