Question 1

What is the cause of most earthquakes?

Accepted Answer

Most earthquakes are

Question 2

Seismologists most commonly report the magnitude of an earthquake using the Richter Scale.

Accepted Answer

A) True 
 B)False

Question 3

What is the composition of the mantle?

Accepted Answer

A)  peridotite 
B)  basalt 
C)  granite 
D)  iron 
E)  iron and nickel metal 
A)  peridotite 
B)  basalt 
C)  granite 
D)  iron 
E)  iron and nickel metal

Question 4

What is a possible cause of intraplate earthquakes?

Accepted Answer

Intraplate earthquakes may be

Question 5

What is paleoseismology,and why is it important?

Accepted Answer

P-wave velocity abruptly decre

Question 6

Chinese seismologists have successfully predicted several earthquakes and are now confident that they can predict most quakes within China.

Accepted Answer

A) True 
 B)False

Question 7

Subtracting the arrival time of the first S-wave from the arrival time of the first P-wave gives the P-S time interval for each seismic station.

Accepted Answer

A) True 
 B)False

Question 8

The most damage from the 1906 San Francisco earthquake was caused by what?

Accepted Answer

A)  fire 
B)  a tsunami 
C)  ground shaking 
D)  cracks opening up 
E)  landslides 
A)  fire 
B)  a tsunami 
C)  ground shaking 
D)  cracks opening up 
E)  landslides

Question 9

Why has it been suggested that large earthquakes might be prevented by injecting water along isolated portions of fault zones,which have been inactive for an unusually long time? When was this technique discovered?

Accepted Answer

Local increase of fluid pressure can cau

Question 10

The temperature of the core of Earth is estimated to be very close to that of the ____.

Accepted Answer

A)  interior of the Sun 
B)  surface of the Sun 
C)  Earth's mantle 
D)  Earth's oceanic crust 
E)  outer space 
A)  interior of the Sun 
B)  surface of the Sun 
C)  Earth's mantle 
D)  Earth's oceanic crust 
E)  outer space

Question 11

Explain the differences between the magnitude and the intensity of an earthquake,in terms of how each is measured or observed.

Accepted Answer

Magnitude is measured by instr

Question 12

An instrument that detects,records,and measures vibrations produced by an earthquake is called a(n)____________________.

Accepted Answer

The answer of An instrument that detects,records,and measures vibrations produced...

Question 13

How does elastic rebound theory explain when earthquakes occur?

Accepted Answer

Where the rocks on the opposite side of

Question 14

If you could drill from the outer surface of Earth all the way to the center,you would pass through the major divisions of Earth,the ____________________,the ____________________,and finally the ____________________.

Accepted Answer

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

Question 15

The structural layer of earth that is liquid is the ____________________.

Accepted Answer

The answer of The structural layer of earth that is...

Question 16

How would you locate an earthquake epicenter using three seismograms,a map,and a protractor?

Accepted Answer

First,determine the difference in first

Question 17

What happens to P-waves and S-waves when they encounter the core-mantle boundary,and what does this change in behavior indicate about the core?

Accepted Answer

P-wave velocity abruptly decre

Question 18

The energy used in seismic tomography is ____________________.

Accepted Answer

The answer of The energy used in seismic tomography is...

Question 19

The second major seismic belt,accounting for 15% of all earthquakes is the Mediterranean-Asiatic belt.

Accepted Answer

A) True 
 B)False

Question 20

Approximately 90% of all earthquake foci are at depths of greater than 100 km.

Accepted Answer

A) True 
 B)False

Exam 9: Earthquakes and Earth's Interior

What is the cause of most earthquakes?

Seismologists most commonly report the magnitude of an earthquake using the Richter Scale.

What is the composition of the mantle?

What is a possible cause of intraplate earthquakes?

What is paleoseismology,and why is it important?

Chinese seismologists have successfully predicted several earthquakes and are now confident that they can predict most quakes within China.

Subtracting the arrival time of the first S-wave from the arrival time of the first P-wave gives the P-S time interval for each seismic station.

The most damage from the 1906 San Francisco earthquake was caused by what?

Why has it been suggested that large earthquakes might be prevented by injecting water along isolated portions of fault zones,which have been inactive for an unusually long time? When was this technique discovered?

The temperature of the core of Earth is estimated to be very close to that of the ____.

Explain the differences between the magnitude and the intensity of an earthquake,in terms of how each is measured or observed.

An instrument that detects,records,and measures vibrations produced by an earthquake is called a(n)____________________.

How does elastic rebound theory explain when earthquakes occur?

If you could drill from the outer surface of Earth all the way to the center,you would pass through the major divisions of Earth,the ____________________,the ____________________,and finally the ____________________.

The structural layer of earth that is liquid is the ____________________.

How would you locate an earthquake epicenter using three seismograms,a map,and a protractor?

What happens to P-waves and S-waves when they encounter the core-mantle boundary,and what does this change in behavior indicate about the core?

The energy used in seismic tomography is ____________________.

The second major seismic belt,accounting for 15% of all earthquakes is the Mediterranean-Asiatic belt.

Approximately 90% of all earthquake foci are at depths of greater than 100 km.

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 Earth'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

Geology in Perspective

Filters

If you could drill from the outer surface of Earth all the way to the center,you would pass through the major divisions of Earth,the ,the ,and finally the .