Question 1

The elastic rebound theory for the origin of earthquakes was first proposed by ________ following the ________ earthquake.

Accepted Answer

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

Question 2

The average composition of the continental crust most closely approximates that of ________.

Accepted Answer

A)   granite
B)   basalt
C)   peridotite
D)   iron

Question 3

The ________ earthquake was accompanied by extensive fire damage.

Accepted Answer

A)   Anchorage, 1964
B)   San Francisco, 1906
C)   Mexico City, 1985
D)   Yerevan, Armenia, 1988

Question 4

The mantle is composed mainly of metallic iron with small amounts of magnesium silicate minerals.

Accepted Answer

A) True 
 B)False

Question 5

S waves can travel through solid and liquid media.

Accepted Answer

A) True 
 B)False

Question 6

The ________ is the site of initial rupturing associated with an earthquake.

Accepted Answer

The answer of The ________ is the site of initial...

Question 7

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 long...

Question 8

The average composition of the oceanic crust is thought to approximate that of ________.

Accepted Answer

A)   granite
B)   basalt
C)   peridotite
D)   iron

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

A)   P waves
B)   S waves
C)   surface waves
D)   body waves

Question 11

The Richter earthquake magnitude scale is based on the total amount of energy released by the earthquake.

Accepted Answer

A) True 
 B)False

Question 12

The asthenosphere is located ________.

Accepted Answer

A)   within the crust
B)   in the upper mantle
C)   between the mantle and outer core
D)   within the outer core

Question 13

The Earth's magnetic field originates by ________.

Accepted Answer

A)   weak electrical currents associated with hot, rising, mantle plumes
B)   magnetic mineral grains in the inner core
C)   weak electrical currents associated with fluid motions in the outer core
D)   magnetization of oxygen and nitrogen atoms in the atmospheric ozone layer by solar radiation

Question 14

The record of an earthquake obtained from a seismic instrument is a(n)  ________.

Accepted Answer

A)   seismograph
B)   seismogram
C)   time-travel graph
D)   epigraph

Question 15

Earthquakes result from the sudden release of elastic strain energy previously stored in rocks surrounding a zone of fault movement.

Accepted Answer

A) True 
 B)False

Question 16

Major earthquakes are often followed by somewhat smaller events known as ________.

Accepted Answer

A)   aftershocks
B)   foreshocks
C)   tremors
D)   hyposhocks

Question 17

The instrument that records earthquake events is termed a ________.

Accepted Answer

A)   polygraph
B)   thermograph
C)   seismograph
D)   barograph

Question 18

The distance between a seismological recording station and the earthquake source is determined from the ________.

Accepted Answer

A)   earthquake magnitude
B)   intensity of the earthquake
C)   length of the seismic record
D)   arrival times of P and S waves

Question 19

Which one of the following best characterizes tsunamis?

Accepted Answer

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

Question 20

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Accepted Answer

A)   Modified Mercalli 
B)   energy 
C)   Richter 
D)   amplitude

Exam 8: Earthquakes and Earths Interior

Earthquakes result from the sudden release of elastic strain energy previously stored in rocks surrounding a zone of fault movement.

Correct AnswerverifiedShow Answer

The mantle is composed mainly of metallic iron with small amounts of magnesium silicate minerals.

Correct AnswerverifiedShow Answer

The average composition of the continental crust most closely approximates that of ________.

Correct AnswerverifiedShow Answer

The instrument that records earthquake events is termed a ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

S waves can travel through solid and liquid media.

Correct AnswerverifiedShow Answer

The Earth's magnetic field originates by ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The asthenosphere is located ________.

Correct AnswerverifiedShow Answer

The distance between a seismological recording station and the earthquake source is determined from the ________.

Correct AnswerverifiedShow Answer

The record of an earthquake obtained from a seismic instrument is a(n) ________.

Correct AnswerverifiedShow Answer

The elastic rebound theory for the origin of earthquakes was first proposed by ________ following the ________ earthquake.

Correct AnswerverifiedShow Answer

The ________ is the site of initial rupturing associated with an earthquake.

Correct AnswerverifiedShow Answer

The average composition of the oceanic crust is thought to approximate that of ________.

Correct AnswerverifiedShow Answer

The ________ earthquake was accompanied by extensive fire damage.

Correct AnswerverifiedShow Answer

The Richter earthquake magnitude scale is based on the total amount of energy released by the earthquake.

Correct AnswerverifiedShow Answer

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Correct AnswerverifiedShow Answer

Which one of the following best characterizes tsunamis?

Correct AnswerverifiedShow Answer

Major earthquakes are often followed by somewhat smaller events known as ________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The elastic rebound theory for the origin of earthquakes was first proposed by following the earthquake.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified