Question 1

The instrument that records earthquake events is termed a_______ _.

Accepted Answer

A)  polygraph
B)  seismograph
C)  barograph
D)  thermographE) A) and C)
F) B) and C)

Question 2

The elastic rebound theory for the origin of earthquakes was first proposed by________ following the ________earthquake.

Accepted Answer

A)  Mohorovicic; 1964 Anchorage
B)  Reid; 1906 San Francisco
C)  Richter; 1989 Loma Prieta
D)  Giuseppe; 1925 Pizza LakeE) A) and D)
F) A) and C)

Question 3

Using the time- travel graph below, how long does it take a P wave to travel 2000 km?

Accepted Answer

The answer of Using the time- travel graph below, how...

Question 4

________is the cool, brittle, outer layer of Earth that includes the crust and uppermost mantle.

Accepted Answer

The answer of ________is the cool, brittle, outer layer of...

Question 5

The upper mantle is very close in chemical and mineralogical composition to__________ .

Accepted Answer

The answer of The upper mantle is very close in...

Question 6

Would earthquakes of similar magnitudes in different regions of the Earth cause approximately the same levels of damage necessarily? In your explanation, consider both geologic and human- induced factors.

Accepted Answer

Beyond the magnitude, duration of the vi...

Question 7

________have the highest velocities.

Accepted Answer

A)  Primary waves
B)  Secondary waves
C)  Refracted S waves
D)  Surface wavesE) B) and C)
F) A) and D)

Question 8

P waves ___________ .

Accepted Answer

A)  have higher amplitudes than do S waves
B)  produce the strongest ground shaking
C)  propagate only in solids
D)  are faster than S waves and surface wavesE) A) and C)
F) B) and C)

Question 9

Which one of the following statements about the crust is NOT true?

Accepted Answer

A)  Continental rocks are compositionally different than oceanic rocks.
B)  It is thickest where prominent mountains exist.
C)  It is the thinnest of the major subdivisions.
D)  Oceanic crust is enriched in potassium, sodium, and silicon.E) A) and B)
F) A) and C)

Question 10

Which one of the following statements is correct?

Accepted Answer

A)  S waves travel through solids and P waves travel through liquids.
B)  P and S waves travel through liquids, but S waves do not travel through solids.
C)  P waves travel through solids; S waves do not.
D)  P and S waves travel through liquids, but P waves do not travel through solids.E) All of the above
F) A) and B)

Question 11

Which one of the following is TRUE regarding tsunamis?

Accepted Answer

A)  They occur in the open ocean, wavelengths are many miles or kilometers and wave heights are only a few feet.
B)  They are started by fault- induced, horizontal shifts in the seafloor that suddenly propel great masses of water in opposite directions.
C)  They travel as deep- water waves at speeds greater than surface seismic waves but slower than S waves.
D)  Their wave heights decrease and wavelengths increase as they move into shallower water.E) C) and D)
F) A) and B)

Question 12

Since much of our knowledge of Earth's interior is inferred from the behavior of seismic waves and not actual samples, what are some of the assumptions that are made in order for our models to be correct? (Hint: Think of earth materials, physical and chemical parameters, etc.)

Accepted Answer

The seismograms only record vibrations f...

Question 13

Approximately how much more energy is released in a 6.5 Moment Magnitude earthquake than in one with Mw of 5.5?

Accepted Answer

A)  3000 times
B)  300 times
C)  30 times
D)  3 timesE) A) and B)
F) A) and C)

Question 14

__________is the layer of warm rock below the crust and uppermost mantle that readily deforms and flows plastically.

Accepted Answer

The answer of __________is the layer of warm rock below...

Question 15

On a typical seismogram,________ will show the highest amplitudes.

Accepted Answer

A)  surface waves
B)  P waves
C)  S waves
D)  body wavesE) A) and D)
F) All of the above

Question 16

The________ Magnitude is a measure of the total energy released. It does not directly measure the extent of building damage.

Accepted Answer

A)  Mercalli
B)  Reid
C)  Moment
D)  GutenbergE) A) and B)
F) None of the above

Question 17

Which one of the following best characterizes tsunamis?

Accepted Answer

A)  They have relatively small amplitudes compared to their very long wavelengths.
B)  They are easily seen at sea but are lost in the swell and breaking waves along a coast.
C)  They are faster than seismic surface waves.
D)  They cause the land to ripple and oscillate.E) C) and D)
F) B) and D)

Question 18

The ________core is probably solidified.

Accepted Answer

The answer of The ________core is probably solidified....

Question 19

Most of our knowledge about Earth's interior comes from________ .

Accepted Answer

A)  examination of deep mine shafts
B)  drill holes
C)  seismic waves
D)  volcanic eruptionsE) B) and D)
F) B) and C)

Question 20

The Richter magnitude of an earthquake is determined from the ________.

Accepted Answer

A)  amplitude of the surface waves
B)  intensity of the earthquake
C)  arrival time of P and S waves
D)  duration of the earthquakeE) All of the above
F) C) and D)

Exam 9: Earthquakes and Earths Interior

Since much of our knowledge of Earth's interior is inferred from the behavior of seismic waves and not actual samples, what are some of the assumptions that are made in order for our models to be correct? (Hint: Think of earth materials, physical and chemical parameters, etc.)

Correct AnswerverifiedThe seismograms only record vibrations f...View AnswerShow Answer

The________ Magnitude is a measure of the total energy released. It does not directly measure the extent of building damage.

Correct AnswerverifiedShow Answer

The ________core is probably solidified.

Correct AnswerverifiedShow Answer

The instrument that records earthquake events is termed a_______ _.

Correct AnswerverifiedShow Answer

Most of our knowledge about Earth's interior comes from________ .

Correct AnswerverifiedShow Answer

On a typical seismogram,________ will show the highest amplitudes.

Correct AnswerverifiedShow Answer

P waves ___________ .

Correct AnswerverifiedShow Answer

The Richter magnitude of an earthquake is determined from the ________.

Correct AnswerverifiedShow Answer

Which one of the following statements about the crust is NOT true?

Correct AnswerverifiedShow Answer

Which one of the following best characterizes tsunamis?

Correct AnswerverifiedShow Answer

The upper mantle is very close in chemical and mineralogical composition to__________ .

Correct AnswerverifiedShow Answer

Would earthquakes of similar magnitudes in different regions of the Earth cause approximately the same levels of damage necessarily? In your explanation, consider both geologic and human- induced factors.

Correct AnswerverifiedBeyond the magnitude, duration of the vi...View AnswerShow Answer

The elastic rebound theory for the origin of earthquakes was first proposed by________ following the ________earthquake.

Correct AnswerverifiedShow Answer

__________is the layer of warm rock below the crust and uppermost mantle that readily deforms and flows plastically.

Correct AnswerverifiedShow Answer

Which one of the following is TRUE regarding tsunamis?

Correct AnswerverifiedShow Answer

________have the highest velocities.

Correct AnswerverifiedShow Answer

Which one of the following statements is correct?

Correct AnswerverifiedShow Answer

Using the time- travel graph below, how long does it take a P wave to travel 2000 km?

Correct AnswerverifiedShow Answer

Approximately how much more energy is released in a 6.5 Moment Magnitude earthquake than in one with Mw of 5.5?

Correct AnswerverifiedShow Answer

________is the cool, brittle, outer layer of Earth that includes the crust and uppermost mantle.

Correct AnswerverifiedShow Answer

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The seismograms only record vibrations f...
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Beyond the magnitude, duration of the vi...
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The elastic rebound theory for the origin of earthquakes was first proposed by following the earthquake.

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