Question 1

New oceanic lithosphere forms at

Accepted Answer

A)  convergent plate boundaries. 
B)  divergent plate boundaries. 
C)  transform plate boundaries. 
A)  convergent plate boundaries. 
B)  divergent plate boundaries. 
C)  transform plate boundaries. B

Question 2

"Oblique" boundaries combine convergent or divergent motion with ________ motion.

Accepted Answer

A)  transform 
B)  spreading 
C)  vertical 
D)  none of the above 
A)  transform 
B)  spreading 
C)  vertical 
D)  none of the above D

Question 3

What is the nature of mantle motion underneath mid-ocean ridges?

Accepted Answer

A)  focused columns of sinking mantle 
B)  focused columns of rising mantle 
C)  broad, spread out, sinking mantle 
D)  broad, spread out, rising mantle 
A)  focused columns of sinking mantle 
B)  focused columns of rising mantle 
C)  broad, spread out, sinking mantle 
D)  broad, spread out, rising mantle D

Question 4

Which type(s) of plate boundaries indicate(s) the direction of relative plate motions?

Accepted Answer

A)  convergent plate boundaries 
B)  divergent plate boundaries 
C)  transform fault boundaries 
D)  all of the above 
A)  convergent plate boundaries 
B)  divergent plate boundaries 
C)  transform fault boundaries 
D)  all of the above

Question 5

What is the name of the large supercontinent that existed 200 million years ago when all the continents were together?

Accepted Answer

A)  Rodinia 
B)  Pangaea 
C)  San Andreas 
A)  Rodinia 
B)  Pangaea 
C)  San Andreas

Question 6

Lines on a map of the seafloor that connect rocks of the same age are called

Accepted Answer

A)  isograds. 
B)  isotopes. 
C)  isochrons. 
A)  isograds. 
B)  isotopes. 
C)  isochrons.

Question 7

About when did the HMS Challenger expedition take place?

Accepted Answer

A)  1490's 
B)  1950's 
C)  1870's 
D)  1980's 
A)  1490's 
B)  1950's 
C)  1870's 
D)  1980's

Question 8

"Normal" magnetized crust at the spreading center formed during the ________ epoch.

Accepted Answer

A)  Brunhes 
B)  Gauss 
C)  Gilbert 
D)  Matuyama 
A)  Brunhes 
B)  Gauss 
C)  Gilbert 
D)  Matuyama

Question 9

-Which of the following locations could be represented by the diagram?

Accepted Answer

A)  the east coast of Africa 
B)  the west coast of South America 
C)  the east coast of North America 
D)  the west coast of Europe 
A)  the east coast of Africa 
B)  the west coast of South America 
C)  the east coast of North America 
D)  the west coast of Europe

Question 10

A tectonic plate that is being subducted along much of its boundary tends to move ___ a tectonic plate that is not being subducted.

Accepted Answer

A)  slower than 
B)  at the same rate as 
C)  faster than 
A)  slower than 
B)  at the same rate as 
C)  faster than

Question 11

What is the name of the ancient ocean that surrounded Pangaea?

Accepted Answer

A)  Panthalassa 
B)  Pangaean Sea 
C)  Laurasia 
A)  Panthalassa 
B)  Pangaean Sea 
C)  Laurasia

Question 12

The questions refer to this cross section, which depicts magnetized oceanic crust at a spreading center. The "+" symbol indicates positive (normal) magnetic anomalies; the "-" symbol indicates negative (reversed) magnetic anomalies.
  
-How fast are points C and D spreading apart from each other?

Accepted Answer

A)  about 20 millimeters/year 
B)  about 100 millimeters/year 
C)  about 50 millimeters/year 
D)  about 200 millimeters/year 
A)  about 20 millimeters/year 
B)  about 100 millimeters/year 
C)  about 50 millimeters/year 
D)  about 200 millimeters/year

Question 13

Most geoscientists have concluded that plate recycling takes place through whole-mantle convection rather than stratified convection.

Accepted Answer

A) True 
 B)False

Question 14

The chain of volcanoes that forms at an ocean-ocean convergent plate boundary is referred to as a(n) ___ arc.

Accepted Answer

A)  continental 
B)  subduction 
C)  island 
A)  continental 
B)  subduction 
C)  island

Question 15

Frictional forces cause plates that are subducting along large fractions of their margins to move more slowly than those that are not subducting.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements is true?

Accepted Answer

A)  Most of the continental crust is older than the oceanic crust. 
B)  Most of the oceanic crust is older than the continental crust. 
C)  Continental crust and oceanic crust are approximately the same age. 
A)  Most of the continental crust is older than the oceanic crust. 
B)  Most of the oceanic crust is older than the continental crust. 
C)  Continental crust and oceanic crust are approximately the same age.

Question 17

Where is new lithosphere created?

Accepted Answer

A)  convergent plate boundaries 
B)  divergent plate boundaries 
C)  transform fault boundaries 
D)  convergent plate boundaries and divergent plate boundaries 
A)  convergent plate boundaries 
B)  divergent plate boundaries 
C)  transform fault boundaries 
D)  convergent plate boundaries and divergent plate boundaries

Question 18

Earthquakes are associated with which of the following types of plate boundaries?

Accepted Answer

A)  divergent and convergent 
B)  convergent and transform 
C)  convergent, divergent, and transform 
A)  divergent and convergent 
B)  convergent and transform 
C)  convergent, divergent, and transform

Question 19

Which of the following features is not associated with a divergent plate boundary?

Accepted Answer

A)  deep-sea trenches 
B)  earthquakes 
C)  mid-ocean ridges 
A)  deep-sea trenches 
B)  earthquakes 
C)  mid-ocean ridges

Question 20

-What type of plate boundary is shown in the diagram?

Accepted Answer

A)  a continent collision 
B)  a spreading center 
C)  a subduction zone 
D)  a transform fault 
A)  a continent collision 
B)  a spreading center 
C)  a subduction zone 
D)  a transform fault

New oceanic lithosphere forms at

"Oblique" boundaries combine convergent or divergent motion with ________ motion.

What is the nature of mantle motion underneath mid-ocean ridges?

Which type(s) of plate boundaries indicate(s) the direction of relative plate motions?

What is the name of the large supercontinent that existed 200 million years ago when all the continents were together?

Lines on a map of the seafloor that connect rocks of the same age are called

About when did the HMS Challenger expedition take place?

"Normal" magnetized crust at the spreading center formed during the ________ epoch.

-Which of the following locations could be represented by the diagram?

A tectonic plate that is being subducted along much of its boundary tends to move ___ a tectonic plate that is not being subducted.

What is the name of the ancient ocean that surrounded Pangaea?

The questions refer to this cross section, which depicts magnetized oceanic crust at a spreading center. The "+" symbol indicates positive (normal) magnetic anomalies; the "-" symbol indicates negative (reversed) magnetic anomalies. -How fast are points C and D spreading apart from each other?

Most geoscientists have concluded that plate recycling takes place through whole-mantle convection rather than stratified convection.

The chain of volcanoes that forms at an ocean-ocean convergent plate boundary is referred to as a(n) ___ arc.

Frictional forces cause plates that are subducting along large fractions of their margins to move more slowly than those that are not subducting.

Which of the following statements is true?

Where is new lithosphere created?

Earthquakes are associated with which of the following types of plate boundaries?

Which of the following features is not associated with a divergent plate boundary?

-What type of plate boundary is shown in the diagram?

Why We Study Earth

How We Study Earth

Earth Materials: Minerals and Rocks

Igneous Processes and Volcanism

Sedimentation: Rocks Formed by Surface Processes

Deformation and Metamorphism

Timing the Geologic Record

History of Earth

The Climate System and Glaciation

The Hydrologic Cycle and Groundwater

Shaping Earths Surface: Streams, Coastlines, and Wind

Earthquakes and Earth Structure

Human Impact on Earths Environment

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Exam 3: Plate Tectonics: The Unifying Theory of Geology

New oceanic lithosphere forms at

"Oblique" boundaries combine convergent or divergent motion with ________ motion.

What is the nature of mantle motion underneath mid-ocean ridges?

Which type(s) of plate boundaries indicate(s) the direction of relative plate motions?

What is the name of the large supercontinent that existed 200 million years ago when all the continents were together?

Lines on a map of the seafloor that connect rocks of the same age are called

About when did the HMS Challenger expedition take place?

"Normal" magnetized crust at the spreading center formed during the ________ epoch.

-Which of the following locations could be represented by the diagram?

A tectonic plate that is being subducted along much of its boundary tends to move ___ a tectonic plate that is not being subducted.

What is the name of the ancient ocean that surrounded Pangaea?

The questions refer to this cross section, which depicts magnetized oceanic crust at a spreading center. The "+" symbol indicates positive (normal) magnetic anomalies; the "-" symbol indicates negative (reversed) magnetic anomalies. -How fast are points C and D spreading apart from each other?

Most geoscientists have concluded that plate recycling takes place through whole-mantle convection rather than stratified convection.

The chain of volcanoes that forms at an ocean-ocean convergent plate boundary is referred to as a(n) ___ arc.

Frictional forces cause plates that are subducting along large fractions of their margins to move more slowly than those that are not subducting.

Which of the following statements is true?

Where is new lithosphere created?

Earthquakes are associated with which of the following types of plate boundaries?

Which of the following features is not associated with a divergent plate boundary?

-What type of plate boundary is shown in the diagram?

Why We Study Earth

How We Study Earth

Earth Materials: Minerals and Rocks

Igneous Processes and Volcanism

Sedimentation: Rocks Formed by Surface Processes

Deformation and Metamorphism

Timing the Geologic Record

History of Earth

The Climate System and Glaciation

The Hydrologic Cycle and Groundwater

Shaping Earths Surface: Streams, Coastlines, and Wind

Earthquakes and Earth Structure

Human Impact on Earths Environment

Filters