Question 1

The ________ is Earth's outermost rocky layer that is broken into plates.

Accepted Answer

The answer of The ________ is Earth's outermost rocky layer...

Question 2

Plate tectonics implies that Earth must be expanding.

Accepted Answer

A) True 
 B)False

Question 3

________ was an aquatic reptile that lived in South America and Africa during the Permian period.

Accepted Answer

A) Mesosaurus 
B) Lystrosaurus 
C) Glossopteris 
D) Tyrannosaurus 
A) Mesosaurus 
B) Lystrosaurus 
C) Glossopteris 
D) Tyrannosaurus

Question 4

When new oceanic lithosphere is generated at an oceanic ridge, what happens to the plate it's attached to?

Accepted Answer

A) The plate gets larger. 
B) The plate gets smaller. 
C) The plate stays the same size. 
D) The plate sinks into the lower mantle. 
A) The plate gets larger. 
B) The plate gets smaller. 
C) The plate stays the same size. 
D) The plate sinks into the lower mantle.

Question 5

Among the following choices, the closest match for the East Pacific Rise is ________.

Accepted Answer

A) the Mid-Atlantic Ridge 
B) the San Andreas Fault 
C) the Appalachian Mountains 
D) the Mariana Trench 
A) the Mid-Atlantic Ridge 
B) the San Andreas Fault 
C) the Appalachian Mountains 
D) the Mariana Trench

Question 6

Plates move at about the same rate your fingernails grow, a few centimeters per year.

Accepted Answer

A) True 
 B)False

Question 7

Alfred Wegener included all of the following lines of evidence as supporting his "continental drift" hypothesis except one. Which was NOT part of Wegener's evidence?

Accepted Answer

A) the geometrical fit between South America and Africa 
B) late Paleozoic glacial features 
C) stripes of reverse magnetism on either side of oceanic rides 
D) similar fossils on widely-separated continents 
A) the geometrical fit between South America and Africa 
B) late Paleozoic glacial features 
C) stripes of reverse magnetism on either side of oceanic rides 
D) similar fossils on widely-separated continents

Question 8

The North American plate is currently ________ in size.

Accepted Answer

The answer of The North American plate is currently ________...

Question 9

The South Atlantic basin is widening by seafloor spreading. Africa and South America are moving ________.

Accepted Answer

The answer of The South Atlantic basin is widening by...

Question 10

Why was Wegener's idea of continental drift rejected?

Accepted Answer

A) It proposed tidal forces as the mechanism for the motion of continents. 
B) It implied that the continents would have plowed their way through weaker oceanic crust, like a boat cutting through a thin layer of sea ice. 
C) It lacked compelling evidence that the continents had been connected in the past. 
D) both A and B 
A) It proposed tidal forces as the mechanism for the motion of continents. 
B) It implied that the continents would have plowed their way through weaker oceanic crust, like a boat cutting through a thin layer of sea ice. 
C) It lacked compelling evidence that the continents had been connected in the past. 
D) both A and B

Question 11

Hawaii is the oldest island of the Hawaiian Island chain.

Accepted Answer

A) True 
 B)False

Question 12

Some kind of ________ (upward movement of less dense material and downward movement of more dense material)appears to drive the motion of plates.

Accepted Answer

The answer of Some kind of ________ (upward movement of...

Question 13

Match between columns
                        Premises:  rising of warm material due to lower density.
 boundary where two plates slide past one another.
 the condition of the magnetic field where the magnetic force flows out of Earth's south pole and back in at the north pole.
 the crust and the stiff upper mantle combined; this is broken into plates.
 boundary where two plates move away from one another.
 the "weak layer" within the mantle. Motion here is thought to help drive plate tectonics.
 the condition of the magnetic field where the magnetic force flows out of Earth's north pole and back in at the south pole.
 boundary where two plates move towards one another.

Accepted Answer

The Answer of lithosphere and asthenosphere and convergent and divergent is...

Question 14

In the early part of the twentieth century, ________ argued forcefully for the idea of continental drift.

Accepted Answer

A) Richard Wagner 
B) Alfred Wegener 
C) James Hutton 
D) Harry Hess 
A) Richard Wagner 
B) Alfred Wegener 
C) James Hutton 
D) Harry Hess

Question 15

Examine the cross-section through a hypothetical ocean basin. Use the magnetic time scale at left to determine when continents A and B separated from one another. Justify your answer.

Accepted Answer

Each side of the oceanic ridge shows the

Question 16

New oceanic lithosphere is formed at ________.

Accepted Answer

A) convergent boundaries by submarine eruptions and intrusions of basaltic magma 
B) divergent boundaries by submarine eruptions and intrusions of basaltic magma 
C) divergent boundaries by submarine eruptions and intrusions of rhyolitic magma 
D) convergent boundaries by submarine eruptions and intrusions of rhyolitic magma 
A) convergent boundaries by submarine eruptions and intrusions of basaltic magma 
B) divergent boundaries by submarine eruptions and intrusions of basaltic magma 
C) divergent boundaries by submarine eruptions and intrusions of rhyolitic magma 
D) convergent boundaries by submarine eruptions and intrusions of rhyolitic magma

Question 17

Label each of the features associated with this divergent plate boundary.

Accepted Answer

The answer of Label each of the features associated with...

Question 18

Iceland sits on a(n)________ plate boundary.

Accepted Answer

The answer of Iceland sits on a(n)________ plate boundary....

Question 19

How wide would an ocean basin be if it formed due to the breakup of a supercontinent 200 million years ago and had an oceanic ridge in the middle that spread at a rate of 2.5 centimeters per year (25 kilometers per million years)?

Accepted Answer

200 Ma × (25 km/Ma)=

Question 20

A volcanic island arc is the result of ________.

Accepted Answer

A) subduction of continental crust underneath oceanic crust 
B) subduction of oceanic crust underneath oceanic crust 
C) subduction of oceanic crust underneath continental crust 
D) subduction of continental crust underneath continental crust 
A) subduction of continental crust underneath oceanic crust 
B) subduction of oceanic crust underneath oceanic crust 
C) subduction of oceanic crust underneath continental crust 
D) subduction of continental crust underneath continental crust

The ________ is Earth's outermost rocky layer that is broken into plates.

Plate tectonics implies that Earth must be expanding.

________ was an aquatic reptile that lived in South America and Africa during the Permian period.

When new oceanic lithosphere is generated at an oceanic ridge, what happens to the plate it's attached to?

Among the following choices, the closest match for the East Pacific Rise is ________.

Plates move at about the same rate your fingernails grow, a few centimeters per year.

Alfred Wegener included all of the following lines of evidence as supporting his "continental drift" hypothesis except one. Which was NOT part of Wegener's evidence?

The North American plate is currently ________ in size.

The South Atlantic basin is widening by seafloor spreading. Africa and South America are moving ________.

Why was Wegener's idea of continental drift rejected?

Hawaii is the oldest island of the Hawaiian Island chain.

Some kind of ________ (upward movement of less dense material and downward movement of more dense material)appears to drive the motion of plates.

In the early part of the twentieth century, ________ argued forcefully for the idea of continental drift.

Examine the cross-section through a hypothetical ocean basin. Use the magnetic time scale at left to determine when continents A and B separated from one another. Justify your answer.

New oceanic lithosphere is formed at ________.

Label each of the features associated with this divergent plate boundary.

Iceland sits on a(n)________ plate boundary.

How wide would an ocean basin be if it formed due to the breakup of a supercontinent 200 million years ago and had an oceanic ridge in the middle that spread at a rate of 2.5 centimeters per year (25 kilometers per million years)?

A volcanic island arc is the result of ________.

Matter and Minerals

Rocks: Materials of the Solid Earth

Landscapes Fashioned by Water

Glacial and Arid Landscapes

Restless Earth: Earthquakes, Geologic Structures, and Mountain Building

Volcanoes and Other Igneous Activity

Geologic Time

Oceans: The Last Frontier

The Restless Ocean

Heating the Atmosphere

Moisture, Clouds, and Precipitation

The Atmosphere in Motion

Weather Patterns and Severe Weather

The Nature of the Solar System

Beyond Our Solar System

Filters

Exam 5: Plate Tectonics: A Scientific Revolution Unfolds

The ________ is Earth's outermost rocky layer that is broken into plates.

Plate tectonics implies that Earth must be expanding.

________ was an aquatic reptile that lived in South America and Africa during the Permian period.

When new oceanic lithosphere is generated at an oceanic ridge, what happens to the plate it's attached to?

Among the following choices, the closest match for the East Pacific Rise is ________.

Plates move at about the same rate your fingernails grow, a few centimeters per year.

Alfred Wegener included all of the following lines of evidence as supporting his "continental drift" hypothesis except one. Which was NOT part of Wegener's evidence?

The North American plate is currently ________ in size.

The South Atlantic basin is widening by seafloor spreading. Africa and South America are moving ________.

Why was Wegener's idea of continental drift rejected?

Hawaii is the oldest island of the Hawaiian Island chain.

Some kind of ________ (upward movement of less dense material and downward movement of more dense material)appears to drive the motion of plates.

In the early part of the twentieth century, ________ argued forcefully for the idea of continental drift.

Examine the cross-section through a hypothetical ocean basin. Use the magnetic time scale at left to determine when continents A and B separated from one another. Justify your answer.

New oceanic lithosphere is formed at ________.

Label each of the features associated with this divergent plate boundary.

Iceland sits on a(n)________ plate boundary.

How wide would an ocean basin be if it formed due to the breakup of a supercontinent 200 million years ago and had an oceanic ridge in the middle that spread at a rate of 2.5 centimeters per year (25 kilometers per million years)?

A volcanic island arc is the result of ________.

Matter and Minerals

Rocks: Materials of the Solid Earth

Landscapes Fashioned by Water

Glacial and Arid Landscapes

Restless Earth: Earthquakes, Geologic Structures, and Mountain Building

Volcanoes and Other Igneous Activity

Geologic Time

Oceans: The Last Frontier

The Restless Ocean

Heating the Atmosphere

Moisture, Clouds, and Precipitation

The Atmosphere in Motion

Weather Patterns and Severe Weather

The Nature of the Solar System

Beyond Our Solar System

Filters