Question 1

Divergent plate boundaries around the world are indicated by

Accepted Answer

A)  Seafloor spreading. 
B)  Hotspots. 
C)  Subduction zones. 
D)  Both seafloor spreading and subduction zones. 
A)  Seafloor spreading. 
B)  Hotspots. 
C)  Subduction zones. 
D)  Both seafloor spreading and subduction zones. D

Question 2

Plates move away from each other by 3.5 cm per year at the mid-Atlantic ridge,for a net growth of 7 cm per year for the width of the Atlantic Ocean.How much wider is the Atlantic Ocean today compared to when Columbus discovered the Americas in 1492?

Accepted Answer

A)  About 40 meters 
B)  About 400 meters 
C)  About 4 meters 
D)  About 4 kilometers (4000 meters) 
A)  About 40 meters 
B)  About 400 meters 
C)  About 4 meters 
D)  About 4 kilometers (4000 meters) A

Question 3

A rock's Curie temperature is the temperature above which it

Accepted Answer

A)  Melts. 
B)  Begins to flow plastically. 
C)  Loses its magnetism. 
D)  Ruptures. 
A)  Melts. 
B)  Begins to flow plastically. 
C)  Loses its magnetism. 
D)  Ruptures. C

Question 4

The Hawaiian Islands were formed by repeated volcanic eruptions over a hot spot.

Accepted Answer

A) True 
 B)False

Question 5

A "polar-wander" curve shows

Accepted Answer

A)  How magnetic poles have moved on the earth. 
B)  How the sea floor has spread. 
C)  How continents have moved or drifted, relative to the magnetic poles. 
D)  How polar glacier ice has moved across continents. 
A)  How magnetic poles have moved on the earth. 
B)  How the sea floor has spread. 
C)  How continents have moved or drifted, relative to the magnetic poles. 
D)  How polar glacier ice has moved across continents.

Question 6

For most solids,sufficiently increased stress results in

Accepted Answer

A)  Breakage. 
B)  Rupture. 
C)  Deformation. 
D)  Transformation. 
A)  Breakage. 
B)  Rupture. 
C)  Deformation. 
D)  Transformation.

Question 7

Fossil remains of this animal proved important to the belief that South America and Africa were once joined,then drifted apart

Accepted Answer

A)  Glossopteris. 
B)  Ichtyosaur. 
C)  Crinoids. 
D)  Mesosaur. 
A)  Glossopteris. 
B)  Ichtyosaur. 
C)  Crinoids. 
D)  Mesosaur.

Question 8

About 200 million years ago,most of the continents were together,forming a "super continent" called Pangaea.

Accepted Answer

A) True 
 B)False

Question 9

The remnant magnetism in the rocks is called paleomagnetism.

Accepted Answer

A) True 
 B)False

Question 10

Pre-drift reassembly of the continents can be assisted by

Accepted Answer

A)  Polar-wander curves. 
B)  Matching up the shapes of the corresponding continental margins. 
C)  Matching up mountain ranges and rock types between once-adjacent continents. 
D)  All of the choices are correct. 
A)  Polar-wander curves. 
B)  Matching up the shapes of the corresponding continental margins. 
C)  Matching up mountain ranges and rock types between once-adjacent continents. 
D)  All of the choices are correct.

Question 11

The Azores Islands

Accepted Answer

A)  Are remnants of rare rift zone volcanoes. 
B)  Are part of the Aleutian Island volcanic arc. 
C)  Are, like Hawaii, formed by a Hot Spot. 
D)  Are not formed by tectonic processes. 
A)  Are remnants of rare rift zone volcanoes. 
B)  Are part of the Aleutian Island volcanic arc. 
C)  Are, like Hawaii, formed by a Hot Spot. 
D)  Are not formed by tectonic processes.

Question 12

Rubber bands show elastic behavior until their elastic limit is exceeded; rocks are always brittle.

Accepted Answer

A) True 
 B)False

Question 13

Oceanic lithosphere

Accepted Answer

A)  Is made of alternating bands of rocks of different compositions. 
B)  Is made of alternating bands of rocks of two different ages. 
C)  Records magnetic "stripes" of normally and reversely magnetized rocks. 
D)  Moves gradually toward the midocean ridges, where it is consumed. 
A)  Is made of alternating bands of rocks of different compositions. 
B)  Is made of alternating bands of rocks of two different ages. 
C)  Records magnetic "stripes" of normally and reversely magnetized rocks. 
D)  Moves gradually toward the midocean ridges, where it is consumed.

Question 14

In order for continental drift to occur,the continental lithosphere must behave plastically.

Accepted Answer

A) True 
 B)False

Question 15

Stress is the deformation resulting from the application of strain to a rock.

Accepted Answer

A) True 
 B)False

Question 16

Satellite data now allow direct measurement of the rates of plate movement,even though it is slow.

Accepted Answer

A) True 
 B)False

Question 17

At a convergent plate boundary,

Accepted Answer

A)  Sea floor is produced. 
B)  High mountains may be built during continent-continent collision. 
C)  There are very few earthquakes. 
D)  All of the choices are correct. 
A)  Sea floor is produced. 
B)  High mountains may be built during continent-continent collision. 
C)  There are very few earthquakes. 
D)  All of the choices are correct.

Question 18

Although convection in the asthenosphere is widely accepted as the cause of plate movements,it may be that the weight of down-going lithosphere in subduction zones pulls the trailing plate behind it.

Accepted Answer

A) True 
 B)False

Question 19

An island arc comprising of volcanic islands forms as a result of ocean-ocean convergence.

Accepted Answer

A) True 
 B)False

Question 20

According to plate-tectonic theory,plates of rigid,elastic __________ move over a weak plastic layer below.

Accepted Answer

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

Divergent plate boundaries around the world are indicated by

Plates move away from each other by 3.5 cm per year at the mid-Atlantic ridge,for a net growth of 7 cm per year for the width of the Atlantic Ocean.How much wider is the Atlantic Ocean today compared to when Columbus discovered the Americas in 1492?

A rock's Curie temperature is the temperature above which it

The Hawaiian Islands were formed by repeated volcanic eruptions over a hot spot.

A "polar-wander" curve shows

For most solids,sufficiently increased stress results in

Fossil remains of this animal proved important to the belief that South America and Africa were once joined,then drifted apart

About 200 million years ago,most of the continents were together,forming a "super continent" called Pangaea.

The remnant magnetism in the rocks is called paleomagnetism.

Pre-drift reassembly of the continents can be assisted by

The Azores Islands

Rubber bands show elastic behavior until their elastic limit is exceeded; rocks are always brittle.

Oceanic lithosphere

In order for continental drift to occur,the continental lithosphere must behave plastically.

Stress is the deformation resulting from the application of strain to a rock.

Satellite data now allow direct measurement of the rates of plate movement,even though it is slow.

At a convergent plate boundary,

Although convection in the asthenosphere is widely accepted as the cause of plate movements,it may be that the weight of down-going lithosphere in subduction zones pulls the trailing plate behind it.

An island arc comprising of volcanic islands forms as a result of ocean-ocean convergence.

According to plate-tectonic theory,plates of rigid,elastic __________ move over a weak plastic layer below.

Planet and Population: An Overview

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Climate-Past, present, and Future

Ground Water and Water Resources

Weathering, erosion, and Soil Resources

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Exam 3: Plate Tectonics

Divergent plate boundaries around the world are indicated by

Plates move away from each other by 3.5 cm per year at the mid-Atlantic ridge,for a net growth of 7 cm per year for the width of the Atlantic Ocean.How much wider is the Atlantic Ocean today compared to when Columbus discovered the Americas in 1492?

A rock's Curie temperature is the temperature above which it

The Hawaiian Islands were formed by repeated volcanic eruptions over a hot spot.

A "polar-wander" curve shows

For most solids,sufficiently increased stress results in

Fossil remains of this animal proved important to the belief that South America and Africa were once joined,then drifted apart

About 200 million years ago,most of the continents were together,forming a "super continent" called Pangaea.

The remnant magnetism in the rocks is called paleomagnetism.

Pre-drift reassembly of the continents can be assisted by

The Azores Islands

Rubber bands show elastic behavior until their elastic limit is exceeded; rocks are always brittle.

Oceanic lithosphere

In order for continental drift to occur,the continental lithosphere must behave plastically.

Stress is the deformation resulting from the application of strain to a rock.

Satellite data now allow direct measurement of the rates of plate movement,even though it is slow.

At a convergent plate boundary,

Although convection in the asthenosphere is widely accepted as the cause of plate movements,it may be that the weight of down-going lithosphere in subduction zones pulls the trailing plate behind it.

An island arc comprising of volcanic islands forms as a result of ocean-ocean convergence.

According to plate-tectonic theory,plates of rigid,elastic __________ move over a weak plastic layer below.

Planet and Population: An Overview

Rocks and Minerals-A First Look

Earthquakes

Volcanoes

Streams and Flooding

Coastal Zones and Processes

Mass Movements

Ice and Glaciers,wind and Deserts

Climate-Past, present, and Future

Ground Water and Water Resources

Weathering, erosion, and Soil Resources

Mineral and Rock Resources

Energy Resources-Fossil Fuels

Energy Resources-Alternative Sources

Waste Disposal

Water Pollution

Air Pollution

Environmental Law and Policy

Land-Use Planning and Engineering Geology

Filters