Question 1

The upper mantle and the crust of Earth together constitute the ____________________.

Accepted Answer

The answer of The upper mantle and the crust of...

Question 2

The number of seismograph records needed to locate the epicenter of an earthquake is ____________________.

Accepted Answer

The answer of The number of seismograph records needed to...

Question 3

The ____________________ is the liquid structural layer of Earth.

Accepted Answer

The answer of The ____________________ is the liquid structural layer...

Question 4

The magnitude of an earthquake measures ____.

Accepted Answer

A) intensity 
B) damage 
C) the energy released 
D) the duration of trembling 
E) combined amplitude of all tremors recorded 
A) intensity 
B) damage 
C) the energy released 
D) the duration of trembling 
E) combined amplitude of all tremors recorded

Question 5

For every integer increase of magnitude on the Richter Scale, ____________________ times more energy is released by the earthquake.

Accepted Answer

The answer of For every integer increase of magnitude on...

Question 6

Explain two measures of an earthquake's strength that are commonly used by seismologists.

Accepted Answer

Intensity is a subjective or qualitative

Question 7

Trenching across an active fault ____.

Accepted Answer

A) releases pressure along the fault 
B) allows geologists to find evidence of previous earthquakes 
C) allows structures to be built to stop faulting activity 
D) diminishes the intensity of earthquakes 
E) produces secondary faults that reduce pressure on the major fault 
A) releases pressure along the fault 
B) allows geologists to find evidence of previous earthquakes 
C) allows structures to be built to stop faulting activity 
D) diminishes the intensity of earthquakes 
E) produces secondary faults that reduce pressure on the major fault

Question 8

The velocities of P- and S-waves are determined by the two properties of the material they are passing through: ____________________ and ____________________.

Accepted Answer

density, e

Question 9

A seismic risk map can be used to ____.

Accepted Answer

A) locate the epicenter of the next earthquake in a particular area 
B) locate the focus of the next earthquake in a particular area 
C) indicate the likelihood and potential severity of future earthquakes 
D) accurately predict the time of the next major earthquake 
E) predict earthquakes between 4.0 and 7.0 on the Richter Scale 
A) locate the epicenter of the next earthquake in a particular area 
B) locate the focus of the next earthquake in a particular area 
C) indicate the likelihood and potential severity of future earthquakes 
D) accurately predict the time of the next major earthquake 
E) predict earthquakes between 4.0 and 7.0 on the Richter Scale

Question 10

The two types of body waves are ____and ____ waves.

Accepted Answer

A) Raleigh; Love 
B) focal; distal 
C) primary; secondary 
D) tensional; extensional 
E) compressional; extensional 
A) Raleigh; Love 
B) focal; distal 
C) primary; secondary 
D) tensional; extensional 
E) compressional; extensional

Question 11

The opening of large crevasses that open up and swallow people is a significant source of danger created by earthquakes.

Accepted Answer

A) True 
 B)False

Question 12

If you could drill from the outer surface of Earth all the way to the center, you would pass first through the crust, then through the ____________________, and finally through the _____________________.

Accepted Answer

The answer of If you could drill from the outer...

Question 13

Continental crust ____.

Accepted Answer

A) is much thinner under mountain ranges than it is in the adjacent areas 
B) is much thicker than average beneath the Rift Valleys of Africa 
C) is usually described as "granitic" 
D) consists of gabbro and basalt 
E) is thinner than oceanic crust 
A) is much thinner under mountain ranges than it is in the adjacent areas 
B) is much thicker than average beneath the Rift Valleys of Africa 
C) is usually described as "granitic" 
D) consists of gabbro and basalt 
E) is thinner than oceanic crust

Question 14

One possible way to decrease the magnitude of an earthquake is to ____.

Accepted Answer

A) build more earthquake-proof structures 
B) replace rigid soil with soil that will liquefy during an earthquake 
C) use drilling equipment to dig into fractured rock and release pressure 
D) inject fluid into fractured rocks 
E) inject concrete into fractured rocks 
A) build more earthquake-proof structures 
B) replace rigid soil with soil that will liquefy during an earthquake 
C) use drilling equipment to dig into fractured rock and release pressure 
D) inject fluid into fractured rocks 
E) inject concrete into fractured rocks

Question 15

On March 11, 2011 a 9.0-magnitude earthquake and tsunami struck Japan but caused little damage because of their high seawall and strong building codes.

Accepted Answer

A) True 
 B)False

Question 16

In contrast to continental crust, oceanic crust is ____.

Accepted Answer

A) granitic 
B) less dense 
C) thicker 
D) complex 
E) simpler 
A) granitic 
B) less dense 
C) thicker 
D) complex 
E) simpler

Question 17

P-waves and S-waves ____.

Accepted Answer

A) are two types of surface waves 
B) are also called Rayleigh waves 
C) are also called Love waves 
D) cause the individual particles of the material to move back and forth in a horizontal plane perpendicular to the direction of wave travel 
E) are the slowest type of seismic waves 
A) are two types of surface waves 
B) are also called Rayleigh waves 
C) are also called Love waves 
D) cause the individual particles of the material to move back and forth in a horizontal plane perpendicular to the direction of wave travel 
E) are the slowest type of seismic waves

Question 18

Briefly explain elastic rebound theory.

Accepted Answer

Elastic rebound theory explains how ener

Exam 9: Earthquakes and Earthapos;s Interior

The upper mantle and the crust of Earth together constitute the ____________________.

The number of seismograph records needed to locate the epicenter of an earthquake is ____________________.

The ____________________ is the liquid structural layer of Earth.

The magnitude of an earthquake measures ____.

For every integer increase of magnitude on the Richter Scale, ____________________ times more energy is released by the earthquake.

Explain two measures of an earthquake's strength that are commonly used by seismologists.

Trenching across an active fault ____.

The velocities of P- and S-waves are determined by the two properties of the material they are passing through: ____________________ and ____________________.

A seismic risk map can be used to ____.

The two types of body waves are ____and ____ waves.

The opening of large crevasses that open up and swallow people is a significant source of danger created by earthquakes.

If you could drill from the outer surface of Earth all the way to the center, you would pass first through the crust, then through the ____________________, and finally through the _____________________.

Continental crust ____.

One possible way to decrease the magnitude of an earthquake is to ____.

On March 11, 2011 a 9.0-magnitude earthquake and tsunami struck Japan but caused little damage because of their high seawall and strong building codes.

In contrast to continental crust, oceanic crust is ____.

P-waves and S-waves ____.

Briefly explain elastic rebound theory.

Understanding Earth: a Dynamic and Evolving Planet

Plate Tectonics: a Unifying Theory

Minerals: The Building Blocks of Rocks

Igneous Rocks and Plutons

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Sediment and Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Deformation, Mountain Building, and Earthapos;s Crust

Mass Wasting

Running Water--Streams and Rivers

Groundwater

Glaciers and Glaciation

The Work of Wind and Deserts

Oceans, Shorelines, and Shoreline Processes

Geologic Time: Concepts and Principles

Organic Evolution--The Theory and Its Supporting Evidence

Precambrian Earth and Life History

Paleozoic Earth History

Paleozoic Life History

Mesozoic Earth and Life History

Cenozoic Earth and Life History

Filters

The velocities of P- and S-waves are determined by the two properties of the material they are passing through: and .

The two types of body waves are and waves.

If you could drill from the outer surface of Earth all the way to the center, you would pass first through the crust, then through the , and finally through the _.