Question 1

How did the Ural Mountains within the middle of the Eurasian plate form?

Accepted Answer

A)  stresses from a distant plate boundary reactivated ancient faults 
B)  the continent is beginning to break apart along a line of hot spots 
C)  the area is presently a plate boundary 
D)  two continents collided, trapping the mountain within the new, larger continent 
A)  stresses from a distant plate boundary reactivated ancient faults 
B)  the continent is beginning to break apart along a line of hot spots 
C)  the area is presently a plate boundary 
D)  two continents collided, trapping the mountain within the new, larger continent

Question 2

Subduction is not always accompanied by compression and thrust faulting in the overriding plate. This is especially true when:

Accepted Answer

A)  the overriding plate is either not moving toward the subducted slab relative to the asthenosphere, or it is moving away 
B)  the overriding plate is moving toward the subducted slab relative to the asthenosphere 
C)  no magma is created by the subduction process 
D)  an accretionary prism has developed at the convergent plate boundary 
A)  the overriding plate is either not moving toward the subducted slab relative to the asthenosphere, or it is moving away 
B)  the overriding plate is moving toward the subducted slab relative to the asthenosphere 
C)  no magma is created by the subduction process 
D)  an accretionary prism has developed at the convergent plate boundary

Question 3

The average thickness of continental crust is:

Accepted Answer

A)  30-50 km 
B)  10-20 km 
C)  100 km 
D)  150 km 
A)  30-50 km 
B)  10-20 km 
C)  100 km 
D)  150 km

Question 4

Regional elevations on land are primarily controlled by:

Accepted Answer

A)  the temperature of the crust 
B)  whether the crust is old or was formed more recently 
C)  whether the area is over a hot spot 
D)  the thickness of continental crust 
A)  the temperature of the crust 
B)  whether the crust is old or was formed more recently 
C)  whether the area is over a hot spot 
D)  the thickness of continental crust

Question 5

Which of the following occurs when mountain belts are eroded?

Accepted Answer

A)  erosion is accompanied by isostatic rebound 
B)  the continental crust becomes thinner 
C)  deep metamorphic and plutonic rocks can be uplifted to the surface 
D)  all of these 
A)  erosion is accompanied by isostatic rebound 
B)  the continental crust becomes thinner 
C)  deep metamorphic and plutonic rocks can be uplifted to the surface 
D)  all of these

Question 6

Basins may form:

Accepted Answer

A)  as a result of normal faulting 
B)  on both oceanic and continental plates 
C)  along plate margins 
D)  all of these 
A)  as a result of normal faulting 
B)  on both oceanic and continental plates 
C)  along plate margins 
D)  all of these

Question 7

Which of the following is NOT interpreted to be related to a continental hot spot?

Accepted Answer

A)  Afar region of east Africa 
B)  high elevations of Tibet 
C)  Yellowstone 
D)  Snake River Plain of Idaho 
E)  all of these are related to a continental hot spot 
A)  Afar region of east Africa 
B)  high elevations of Tibet 
C)  Yellowstone 
D)  Snake River Plain of Idaho 
E)  all of these are related to a continental hot spot

Question 8

If you had this type of deformation of a region, it would:

Accepted Answer

A)  thicken the crust and cause subsidence 
B)  thicken the crust and cause uplift 
C)  thin the crust and cause subsidence 
D)  thin the crust and cause uplift 
E)  none of these 
A)  thicken the crust and cause subsidence 
B)  thicken the crust and cause uplift 
C)  thin the crust and cause subsidence 
D)  thin the crust and cause uplift 
E)  none of these

Question 9

What is true of regional elevations across North America?

Accepted Answer

A)  Elevations tend to be higher toward the west and decrease toward the east. 
B)  Elevations are highest in the Appalachian Mountains. 
C)  Elevations are lowest in the Great Plains. 
D)  Elevations do not change, when progressing from west to east. 
A)  Elevations tend to be higher toward the west and decrease toward the east. 
B)  Elevations are highest in the Appalachian Mountains. 
C)  Elevations are lowest in the Great Plains. 
D)  Elevations do not change, when progressing from west to east.

Question 10

The principle of isostasy was discovered by observing:

Accepted Answer

A)  wooden blocks floating in a tank 
B)  icebergs of various sizes floating in the ocean 
C)  discrepancies in measurements made by surveyors in India 
A)  wooden blocks floating in a tank 
B)  icebergs of various sizes floating in the ocean 
C)  discrepancies in measurements made by surveyors in India

Question 11

Which feature on this figure formed entirely before joining of these two terranes?

Accepted Answer

A)  sediment with fossils F) 
B)  the overlapping sedimentary unit O) 
C)  the pluton P) 
D)  the shear zone and fault S) 
E)  none of these 
A)  sediment with fossils F) 
B)  the overlapping sedimentary unit O) 
C)  the pluton P) 
D)  the shear zone and fault S) 
E)  none of these

Question 12

On the image below, what feature will be present in the future at site B?

Accepted Answer

A)  passive margin 
B)  trench and accretionary prism 
C)  volcanic mountain belt 
A)  passive margin 
B)  trench and accretionary prism 
C)  volcanic mountain belt

Question 13

Which of the following processes/situations may alter regional land elevation?

Accepted Answer

A)  Intrusions of magma 
B)  Thrust faulting or normal faulting 
C)  Erosion or deposition 
D)  Heating or cooling 
E)  All of these processes/situations can alter regional land elevation 
A)  Intrusions of magma 
B)  Thrust faulting or normal faulting 
C)  Erosion or deposition 
D)  Heating or cooling 
E)  All of these processes/situations can alter regional land elevation

Question 14

Which of the following does NOT indicate that two terranes were already in contact by a certain time?

Accepted Answer

A)  a sedimentary or volcanic unit of that age overlaps their mutual boundary 
B)  an intrusion invades both terranes or crosscuts their boundary 
C)  rock on both side shared the same deformation or metamorphic event 
D)  the two terranes have fossils of the same age that originated in different environments 
A)  a sedimentary or volcanic unit of that age overlaps their mutual boundary 
B)  an intrusion invades both terranes or crosscuts their boundary 
C)  rock on both side shared the same deformation or metamorphic event 
D)  the two terranes have fossils of the same age that originated in different environments

Question 15

An accretionary prism is:

Accepted Answer

A)  a wedge-shaped zone of faults, folds, and metamorphosed rocks formed along the upper parts of a subduction zone as material is scraped off 
B)  an active volcanic arc created by the subduction of one slab of ocean-crust-capped lithosphere beneath another 
C)  a sedimentary basin formed between a mountain range and the continental interior 
D)  a triangular-shaped sedimentary structure that allows light to pass through it and into lower areas of the crust 
A)  a wedge-shaped zone of faults, folds, and metamorphosed rocks formed along the upper parts of a subduction zone as material is scraped off 
B)  an active volcanic arc created by the subduction of one slab of ocean-crust-capped lithosphere beneath another 
C)  a sedimentary basin formed between a mountain range and the continental interior 
D)  a triangular-shaped sedimentary structure that allows light to pass through it and into lower areas of the crust

Question 16

The process of adding a terrane to another landmass is called:

Accepted Answer

A)  accretion 
B)  rifting 
C)  subsidence 
D)  back-arc spreading 
A)  accretion 
B)  rifting 
C)  subsidence 
D)  back-arc spreading

Question 17

Which of these regions is high because of a continental collision?

Accepted Answer

A)  1, Andes of South America 
B)  2, East Africa Rift 
C)  3, Tibet 
D)  none of these 
A)  1, Andes of South America 
B)  2, East Africa Rift 
C)  3, Tibet 
D)  none of these

Question 18

A mountain or hill that remains when adjacent areas have eroded to lower levels is an):

Accepted Answer

A)  an erosional remnant 
B)  anticline 
C)  syncline 
D)  thrust fault 
A)  an erosional remnant 
B)  anticline 
C)  syncline 
D)  thrust fault

Question 19

Which of the following will be accompanied by a decrease in elevation?

Accepted Answer

A)  gaining crustal material, such as by deposition 
B)  moving from oceanic crust to continental crust 
C)  compressing the crust from the sides 
D)  increasing the thickness of the lithosphere 
A)  gaining crustal material, such as by deposition 
B)  moving from oceanic crust to continental crust 
C)  compressing the crust from the sides 
D)  increasing the thickness of the lithosphere

Question 20

Two well-known regions of currently active continental hot spots are:

Accepted Answer

A)  Afar Region in East Africa, and Yellowstone National Park in North America 
B)  Great Lakes in North America, and Great Dividing Range in Australia 
C)  Andes Mountains in South America, and the Cascade Range in North America 
D)  Antarctica and Greenland 
A)  Afar Region in East Africa, and Yellowstone National Park in North America 
B)  Great Lakes in North America, and Great Dividing Range in Australia 
C)  Andes Mountains in South America, and the Cascade Range in North America 
D)  Antarctica and Greenland

How did the Ural Mountains within the middle of the Eurasian plate form?

Subduction is not always accompanied by compression and thrust faulting in the overriding plate. This is especially true when:

The average thickness of continental crust is:

Regional elevations on land are primarily controlled by:

Which of the following occurs when mountain belts are eroded?

Basins may form:

Which of the following is NOT interpreted to be related to a continental hot spot?

If you had this type of deformation of a region, it would:

What is true of regional elevations across North America?

The principle of isostasy was discovered by observing:

Which feature on this figure formed entirely before joining of these two terranes?

On the image below, what feature will be present in the future at site B?

Which of the following processes/situations may alter regional land elevation?

Which of the following does NOT indicate that two terranes were already in contact by a certain time?

An accretionary prism is:

The process of adding a terrane to another landmass is called:

Which of these regions is high because of a continental collision?

A mountain or hill that remains when adjacent areas have eroded to lower levels is an):

Which of the following will be accompanied by a decrease in elevation?

Two well-known regions of currently active continental hot spots are:

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Exam 11: Mountains, Basins, and Continents

How did the Ural Mountains within the middle of the Eurasian plate form?

Subduction is not always accompanied by compression and thrust faulting in the overriding plate. This is especially true when:

The average thickness of continental crust is:

Regional elevations on land are primarily controlled by:

Which of the following occurs when mountain belts are eroded?

Basins may form:

Which of the following is NOT interpreted to be related to a continental hot spot?

If you had this type of deformation of a region, it would:

What is true of regional elevations across North America?

The principle of isostasy was discovered by observing:

Which feature on this figure formed entirely before joining of these two terranes?

On the image below, what feature will be present in the future at site B?

Which of the following processes/situations may alter regional land elevation?

Which of the following does NOT indicate that two terranes were already in contact by a certain time?

An accretionary prism is:

The process of adding a terrane to another landmass is called:

Which of these regions is high because of a continental collision?

A mountain or hill that remains when adjacent areas have eroded to lower levels is an):

Which of the following will be accompanied by a decrease in elevation?

Two well-known regions of currently active continental hot spots are:

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments

Deformation and Metamorphism

Geologic Time

Seafloor and Continental Margins

Earthquakes and Earths Interior

Climate and Weathering

Glaciers, Shorelines, and Changing Sea Levels

Weathering, Soil, and Unstable Slopes

Streams and Flooding

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters