Question 1

The mechanism causing lithospheric plates to move is thought to be

Accepted Answer

A)  convection in the mantle. 
B)  "slab pull" caused by subducting lithosphere. 
C)  tidal forces. 
D)  Earth's rotation. 
E)  a combination of convection in the mantle and "slab pull" caused by subducting lithosphere. 
A)  convection in the mantle. 
B)  "slab pull" caused by subducting lithosphere. 
C)  tidal forces. 
D)  Earth's rotation. 
E)  a combination of convection in the mantle and "slab pull" caused by subducting lithosphere. E

Question 2

Which method is being used to investigate the structure of the mantle?

Accepted Answer

A)  Isostasy 
B)  Measurement of seafloor heat flow 
C)  Seismic tomography 
D)  Subduction 
E)  Radiometric dating 
A)  Isostasy 
B)  Measurement of seafloor heat flow 
C)  Seismic tomography 
D)  Subduction 
E)  Radiometric dating C

Question 3

The midocean ridges and rises are spreading centers where new oceanic crust is created.

Accepted Answer

A) True 
 B)False  True

Question 4

The taller a mountain is, the deeper its root will extend into the asthenosphere.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following occurred during the Paleozoic era?

Accepted Answer

A)  Landmasses were strung along Earth's equator. 
B)  Landmasses drifted across the South Pole. 
C)  Landmasses came together to form Pangaea. 
D)  All of these are correct. 
E)  None of these are correct. 
A)  Landmasses were strung along Earth's equator. 
B)  Landmasses drifted across the South Pole. 
C)  Landmasses came together to form Pangaea. 
D)  All of these are correct. 
E)  None of these are correct.

Question 6

Seafloor spreading can be detected by

Accepted Answer

A)  changes in water temperature. 
B)  changes in water chemistry. 
C)  acoustic monitoring. 
D)  submersible observation of the seafloor. 
E)  All of these are correct. 
A)  changes in water temperature. 
B)  changes in water chemistry. 
C)  acoustic monitoring. 
D)  submersible observation of the seafloor. 
E)  All of these are correct.

Question 7

Seismic surface waves travel at about the same speed as ocean waves.

Accepted Answer

A) True 
 B)False

Question 8

Which statement is true about continental crust?

Accepted Answer

A)  It is composed of granitic-type rock and has a higher density than oceanic crust. 
B)  It is composed of basaltic-type rock and has a higher density than oceanic crust. 
C)  It is composed of granitic-type rock and has a lower density than oceanic crust. 
D)  It is composed of basaltic-type rock and has a lower density than oceanic crust. 
E)  It is composed of granitic-type rock and has the same density as oceanic crust. 
A)  It is composed of granitic-type rock and has a higher density than oceanic crust. 
B)  It is composed of basaltic-type rock and has a higher density than oceanic crust. 
C)  It is composed of granitic-type rock and has a lower density than oceanic crust. 
D)  It is composed of basaltic-type rock and has a lower density than oceanic crust. 
E)  It is composed of granitic-type rock and has the same density as oceanic crust.

Question 9

Volcanic activity occurs at all of the following except

Accepted Answer

A)  convergent boundaries between two oceanic plates. 
B)  continental rift valleys. 
C)  convergent boundaries between two continental plates. 
D)  mid ocean ridges. 
E)  convergent boundary between a continental and oceanic plate. 
A)  convergent boundaries between two oceanic plates. 
B)  continental rift valleys. 
C)  convergent boundaries between two continental plates. 
D)  mid ocean ridges. 
E)  convergent boundary between a continental and oceanic plate.

Question 10

What is the approximate length of the mid ocean ridge system that extends around the globe through all of the major ocean basins?

Accepted Answer

A)  6,500,000km 
B)  650,000km 
C)  65,000km 
D)  6,500km 
E)  650km 
A)  6,500,000km 
B)  650,000km 
C)  65,000km 
D)  6,500km 
E)  650km

Question 11

The deepest earthquakes occur in subduction zones at oceanic-oceanic plate convergent boundaries.

Accepted Answer

A) True 
 B)False

Question 12

Which of the Earth's layers has the greatest density?

Accepted Answer

A)  Core 
B)  Mantle 
C)  Crust 
D)  Lithosphere 
E)  Asthenosphere 
A)  Core 
B)  Mantle 
C)  Crust 
D)  Lithosphere 
E)  Asthenosphere

Question 13

The deep mantle below the asthenosphere is called the mesosphere.

Accepted Answer

A) True 
 B)False

Question 14

Earth's inner core is liquid whereas its outer core is solid.

Accepted Answer

A) True 
 B)False

Question 15

The trailing margin of a continental landmass ______ than its leading margin.

Accepted Answer

A)  is wider 
B)  shows less tectonic activity 
C)  is more stable 
D)  All of these are correct. 
E)  is wider and is more stable 
A)  is wider 
B)  shows less tectonic activity 
C)  is more stable 
D)  All of these are correct. 
E)  is wider and is more stable

Question 16

The east coast of the United States is an example of a(n) __________ continental margin.

Accepted Answer

A)  passive 
B)  active 
C)  trailing 
D)  leading 
E)  passive and trailing 
A)  passive 
B)  active 
C)  trailing 
D)  leading 
E)  passive and trailing

Question 17

Sediment thickness on the oceanic crust tends to be greatest in the center of ocean basins

Accepted Answer

A) True 
 B)False

Question 18

Before Pangaea, there was an earlier supercontinent we call

Accepted Answer

A)  Panthalassa. 
B)  Gorda. 
C)  Rodinia. 
D)  Lefse. 
E)  Neogenia. 
A)  Panthalassa. 
B)  Gorda. 
C)  Rodinia. 
D)  Lefse. 
E)  Neogenia.

Question 19

Oceanic-type crust is more dense than continental-type crust.

Accepted Answer

A) True 
 B)False

Question 20

Earthquakes occur at all of the following except

Accepted Answer

A)  convergent boundaries between two oceanic plates. 
B)  continental rift valleys. 
C)  convergent boundaries between two continental plates. 
D)  mid ocean ridges. 
E)  Earthquakes occur at all of the above settings. 
A)  convergent boundaries between two oceanic plates. 
B)  continental rift valleys. 
C)  convergent boundaries between two continental plates. 
D)  mid ocean ridges. 
E)  Earthquakes occur at all of the above settings.

The mechanism causing lithospheric plates to move is thought to be

Which method is being used to investigate the structure of the mantle?

The midocean ridges and rises are spreading centers where new oceanic crust is created.

The taller a mountain is, the deeper its root will extend into the asthenosphere.

Which of the following occurred during the Paleozoic era?

Seafloor spreading can be detected by

Seismic surface waves travel at about the same speed as ocean waves.

Which statement is true about continental crust?

Volcanic activity occurs at all of the following except

What is the approximate length of the mid ocean ridge system that extends around the globe through all of the major ocean basins?

The deepest earthquakes occur in subduction zones at oceanic-oceanic plate convergent boundaries.

Which of the Earth's layers has the greatest density?

The deep mantle below the asthenosphere is called the mesosphere.

Earth's inner core is liquid whereas its outer core is solid.

The trailing margin of a continental landmass ______ than its leading margin.

The east coast of the United States is an example of a(n) __________ continental margin.

Sediment thickness on the oceanic crust tends to be greatest in the center of ocean basins

Before Pangaea, there was an earlier supercontinent we call

Oceanic-type crust is more dense than continental-type crust.

Earthquakes occur at all of the following except

The Water Planet

The Sea Floor and Its Sediments

The Physical Properties of Water

Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Energy, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Prologue: The History of Oceanography

Filters

Exam 2: Earth Structure and Plate Tectonics

The mechanism causing lithospheric plates to move is thought to be

Which method is being used to investigate the structure of the mantle?

The midocean ridges and rises are spreading centers where new oceanic crust is created.

The taller a mountain is, the deeper its root will extend into the asthenosphere.

Which of the following occurred during the Paleozoic era?

Seafloor spreading can be detected by

Seismic surface waves travel at about the same speed as ocean waves.

Which statement is true about continental crust?

Volcanic activity occurs at all of the following except

What is the approximate length of the mid ocean ridge system that extends around the globe through all of the major ocean basins?

The deepest earthquakes occur in subduction zones at oceanic-oceanic plate convergent boundaries.

Which of the Earth's layers has the greatest density?

The deep mantle below the asthenosphere is called the mesosphere.

Earth's inner core is liquid whereas its outer core is solid.

The trailing margin of a continental landmass ______ than its leading margin.

The east coast of the United States is an example of a(n) __________ continental margin.

Sediment thickness on the oceanic crust tends to be greatest in the center of ocean basins

Before Pangaea, there was an earlier supercontinent we call

Oceanic-type crust is more dense than continental-type crust.

Earthquakes occur at all of the following except

The Water Planet

The Sea Floor and Its Sediments

The Physical Properties of Water

Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Energy, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Prologue: The History of Oceanography

Filters