Question 1

Why does Earth have dry land?

Accepted Answer

A)  There is not enough water to cover the surface completely. 
B)  All planets of the solar system have dry land. 
C)  Earth has continental crust, which rides isostatically higher than oceanic crust because it is relatively thick and less dense. 
D)  The mid-ocean ridges push up the bottom of the seafloor above sea level. Eventually there will not be any ocean left. 
E)  All of these are correct. 
A)  There is not enough water to cover the surface completely. 
B)  All planets of the solar system have dry land. 
C)  Earth has continental crust, which rides isostatically higher than oceanic crust because it is relatively thick and less dense. 
D)  The mid-ocean ridges push up the bottom of the seafloor above sea level. Eventually there will not be any ocean left. 
E)  All of these are correct. C

Question 2

The density of the inner core reaches a maximum of about ________ grams/cm3.

Accepted Answer

A)  150 
B)  70 
C)  52 
D)  31 
E)  16 
A)  150 
B)  70 
C)  52 
D)  31 
E)  16 E

Question 3

The refraction and shadow patterns of seismic P-waves and S-waves indicate the dimensions and properties of Earth's layers.

Accepted Answer

A) True 
 B)False  True

Question 4

The San Andreas Fault is an example of a transform fault.

Accepted Answer

A) True 
 B)False

Question 5

Identify all of the types of plate boundaries that are associated with active volcanism.

Accepted Answer

A)  Divergent 
B)  Ocean-Ocean Convergent 
C)  Transform 
D)  Continent-Continent Convergent 
E)  Ocean-Continent Convergent 
A)  Divergent 
B)  Ocean-Ocean Convergent 
C)  Transform 
D)  Continent-Continent Convergent 
E)  Ocean-Continent Convergent

Question 6

Epicenters are points on Earth's surface directly above a hot spot.

Accepted Answer

A) True 
 B)False

Question 7

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 8

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

Question 9

The continental landmasses are less dense than the mantle and are buoyed up by depressing the underlying mantle.

Accepted Answer

A) True 
 B)False

Question 10

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 11

Seafloor spreading is continuing at a rate of approximately ________.

Accepted Answer

A)  1 to 10 cm/year 
B)  1 to 10 m/year 
C)  1 to 10 km/year 
D)  1 to 100 cm/year 
E)  1 to 100 m/year 
A)  1 to 10 cm/year 
B)  1 to 10 m/year 
C)  1 to 10 km/year 
D)  1 to 100 cm/year 
E)  1 to 100 m/year

Question 12

The thickness of deep-sea sediments increases with distance from a spreading center.

Accepted Answer

A) True 
 B)False

Question 13

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 is 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 is correct.

Question 14

The age of the seamounts from Hawaii to Midway Island increases in age from east to west.

Accepted Answer

A) True 
 B)False

Question 15

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

Question 16

Oceanic-oceanic plate collision ________.

Accepted Answer

A)  results in the newer, denser oceanic plate to subduct under the older, lighter plate 
B)  results in the older, denser oceanic plate to subduct under the newer, lighter plate 
C)  exhibits no volcanism whatsoever 
D)  exhibits no earthquakes whatsoever 
E)  None of these is correct. 
A)  results in the newer, denser oceanic plate to subduct under the older, lighter plate 
B)  results in the older, denser oceanic plate to subduct under the newer, lighter plate 
C)  exhibits no volcanism whatsoever 
D)  exhibits no earthquakes whatsoever 
E)  None of these is correct.

Question 17

Volcanic activity associated with subduction zones is more gentle and less explosive than volcanic activity associated with hot spots and mid-ocean ridges.

Accepted Answer

A) True 
 B)False

Question 18

Throughout time, continents break apart and collide and ocean basins open and close. This cyclical process is known as the ________.

Accepted Answer

A)  Wilson cycle 
B)  Wegener cycle 
C)  lithospheric cycle 
D)  Benioff cycle 
E)  Richter cycle 
A)  Wilson cycle 
B)  Wegener cycle 
C)  lithospheric cycle 
D)  Benioff cycle 
E)  Richter cycle

Question 19

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 20

A program of deep-sea drilling for cores from the ocean's bottom is carried out by the ________.

Accepted Answer

A)  Kon-Tiki 
B)  Fram 
C)  JOIDES Resolution 
D)  Calypso 
E)  Beagle 
A)  Kon-Tiki 
B)  Fram 
C)  JOIDES Resolution 
D)  Calypso 
E)  Beagle

Why does Earth have dry land?

The density of the inner core reaches a maximum of about ________ grams/cm³.

The refraction and shadow patterns of seismic P-waves and S-waves indicate the dimensions and properties of Earth's layers.

The San Andreas Fault is an example of a transform fault.

Identify all of the types of plate boundaries that are associated with active volcanism.

Epicenters are points on Earth's surface directly above a hot spot.

Volcanic activity occurs at all of the following except ________.

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

The continental landmasses are less dense than the mantle and are buoyed up by depressing the underlying mantle.

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

Seafloor spreading is continuing at a rate of approximately ________.

The thickness of deep-sea sediments increases with distance from a spreading center.

Which of the following occurred during the Paleozoic era?

The age of the seamounts from Hawaii to Midway Island increases in age from east to west.

Earthquakes occur at all of the following except ________.

Oceanic-oceanic plate collision ________.

Volcanic activity associated with subduction zones is more gentle and less explosive than volcanic activity associated with hot spots and mid-ocean ridges.

Throughout time, continents break apart and collide and ocean basins open and close. This cyclical process is known as the ________.

Which statement is true about continental crust?

A program of deep-sea drilling for cores from the ocean's bottom is carried out by the ________.

The Water Planet

The Sea Floor and Its Sediments

The Physical Properties of Water

The Chemistry of Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Productivity, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Filters

Exam 2: Earth Structure and Plate Tectonics

Why does Earth have dry land?

The density of the inner core reaches a maximum of about ________ grams/cm3.

The refraction and shadow patterns of seismic P-waves and S-waves indicate the dimensions and properties of Earth's layers.

The San Andreas Fault is an example of a transform fault.

Identify all of the types of plate boundaries that are associated with active volcanism.

Epicenters are points on Earth's surface directly above a hot spot.

Volcanic activity occurs at all of the following except ________.

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

The continental landmasses are less dense than the mantle and are buoyed up by depressing the underlying mantle.

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

Seafloor spreading is continuing at a rate of approximately ________.

The thickness of deep-sea sediments increases with distance from a spreading center.

Which of the following occurred during the Paleozoic era?

The age of the seamounts from Hawaii to Midway Island increases in age from east to west.

Earthquakes occur at all of the following except ________.

Oceanic-oceanic plate collision ________.

Volcanic activity associated with subduction zones is more gentle and less explosive than volcanic activity associated with hot spots and mid-ocean ridges.

Throughout time, continents break apart and collide and ocean basins open and close. This cyclical process is known as the ________.

Which statement is true about continental crust?

A program of deep-sea drilling for cores from the ocean's bottom is carried out by the ________.

The Water Planet

The Sea Floor and Its Sediments

The Physical Properties of Water

The Chemistry of Seawater

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Productivity, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Filters

The density of the inner core reaches a maximum of about ________ grams/cm³.