Question 1

When an earthquake occurs, energy radiates in all directions from its source. The source is also referred to as the ________.

Accepted Answer

A)  focus
B)  epicenter
C)  seismic zone
D)  inertial point

Question 2

________refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.

Accepted Answer

A)  Seismoflowage
B)  Slurrying
C)  Motion slip
D)  Liquefaction

Question 3

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

Accepted Answer

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

Question 4

The amount of destruction caused by earthquake vibrations is affected by ________.

Accepted Answer

A)  intensity and duration of the vibrations
B)  design of structures
C)  nature of the surface material
D)  all of these

Question 5

The mechanism by which rocks store and eventually release energy in the form of an earthquake is termed________ .

Accepted Answer

A)  fault displacement
B)  stress fracture
C)  elastic rebound
D)  seismic rebound C

Question 6

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

Accepted Answer

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

Question 7

What instrument is used to record earthquake vibrations?

Accepted Answer

The answer of What instrument is used to record earthquake...

Question 8

________is the maximum possible damage designation on the Mercalli scale.

Accepted Answer

A)  XII
B)  10
C)  X
D)  12 A

Question 9

The dense core of Earth is thought to consist predominantly of _________ .

Accepted Answer

A)  iron
B)  copper
C)  nickel
D)  lead

Question 10

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

Accepted Answer

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

Question 11

________is another name commonly used by scientists to denote seismic sea waves induced by earthquakes.

Accepted Answer

The answer of ________is another name commonly used by scientists...

Question 12

Major earthquakes are often followed by somewhat smaller events known as__________ .

Accepted Answer

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

Question 13

The _______earthquake was accompanied by extensive fire damage.

Accepted Answer

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

Question 14

The asthenosphere is located________ .

Accepted Answer

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

Question 15

________is the name of the earthquake- magnitude scale based on the amount of total energy released during a large earthquake.

Accepted Answer

The answer of ________is the name of the earthquake- magnitude...

Question 16

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

Accepted Answer

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

Question 17

The position on Earth's surface directly above the earthquake source is called the________ .

Accepted Answer

A)  inertial point
B)  focus
C)  epicenter
D)  seismic zone

Question 18

The__________ is the site of initial rupturing associated with an earthquake.

Accepted Answer

The answer of The__________ is the site of initial rupturing...

Question 19

Overall, this type of seismic wave is the most destructive.

Accepted Answer

A)  S wave
B)  tsunami
C)  surface wave
D)  P wave

Question 20

The Mercalli Scale is a scale from ________.

Accepted Answer

A)  I to X that rates the total energy released during the main quake and all aftershocks
B)  I to XII that rates the structural damage due to an earthquake
C)  1 to 10 that rates the energy released by an earthquake
D)  1 to 12 that rates the energy required for faulting to occur

Exam 9: Earthquakes and Earths Interior

When an earthquake occurs, energy radiates in all directions from its source. The source is also referred to as the ________.

Correct AnswerverifiedShow Answer

________refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

The amount of destruction caused by earthquake vibrations is affected by ________.

Correct AnswerverifiedShow Answer

The mechanism by which rocks store and eventually release energy in the form of an earthquake is termed________ .

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

What instrument is used to record earthquake vibrations?

Correct AnswerverifiedShow Answer

________is the maximum possible damage designation on the Mercalli scale.

Correct AnswerverifiedA

The dense core of Earth is thought to consist predominantly of _________ .

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

________is another name commonly used by scientists to denote seismic sea waves induced by earthquakes.

Correct AnswerverifiedShow Answer

Major earthquakes are often followed by somewhat smaller events known as__________ .

Correct AnswerverifiedShow Answer

The _______earthquake was accompanied by extensive fire damage.

Correct AnswerverifiedShow Answer

The asthenosphere is located________ .

Correct AnswerverifiedShow Answer

________is the name of the earthquake- magnitude scale based on the amount of total energy released during a large earthquake.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The position on Earth's surface directly above the earthquake source is called the________ .

Correct AnswerverifiedShow Answer

The__________ is the site of initial rupturing associated with an earthquake.

Correct AnswerverifiedShow Answer

Overall, this type of seismic wave is the most destructive.

Correct AnswerverifiedShow Answer

The Mercalli Scale is a scale from ________.

Correct AnswerverifiedShow Answer

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