Question 1

What is the ratio of sea to land on Earth?

Accepted Answer

A)   61: 39
B)   71: 29
C)   81: 19
D)   51: 49E) A) and D)
F) None of the above

Question 2

How does isostasy explain the formation of rift valleys?

Accepted Answer

A)   root decreases under compression
B)   density decreases under tension
C)   root decreases under tension
D)   density decreases under compressionE) None of the above
F) B) and D)

Question 3

The depth of the crust does not depend on

Accepted Answer

A)   the height of the mountain above it.
B)   the heights of nearby mountains.
C)   the density of the mantle beneath it.
D)   the composition of the crust.E) C) and D)
F) B) and D)

Question 4

How could the Himalayan Mountains be getting taller?

Accepted Answer

Because the Indian plate is sl...

Question 5

All past changes in sea level were due to the growth and demise of glaciers.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following surface elevations is clearly underlain by oceanic crust?

Accepted Answer

A)   8.85 km
B)   0 km (sea level) 
C)   - 0.5 km
D)   - 5 kmE) A) and D)
F) C) and D)

Question 7

Which of the following is not an effect of tension?

Accepted Answer

A)   thrust faults
B)   normal faults
C)   decrease in elevation
D)   shrinking of mountain rootsE) A) and C)
F) A) and B)

Question 8

Put the following steps in the correct sequence according to how one would take a survey reading. 1. The angle between the line sighted to the star and a line drawn directly toward Earth's center permits calculation of latitude. 2. Surveyors sight a telescope on the North Star, which is almost directly above Earth's rotation axis. 3. A table is set up with its level surface perpendicular to a line directed towards Earth's center.

Accepted Answer

A)   1, 2, 3
B)   2, 1, 3
C)   3, 2, 1
D)   3, 1, 2E) B) and D)
F) A) and B)

Question 9

What does the principle of isostasy explain?

Accepted Answer

A)   variations in elevation due to ice pressure and weight on top of the crust
B)   variations in elevation due to type and thickness of underlying crust
C)   variations in elevation due to tectonic forces
D)   variations in elevation due to rock age, sedimentation patterns, and oceanic historyE) None of the above
F) A) and C)

Question 10

The principle of isostasy tells us that the key factor(s)  determining the elevation of a floating object is(are)

Accepted Answer

A)   thickness and density.
B)   thickness only.
C)   density only.
D)   the percentage of ice.E) B) and D)
F) All of the above

Question 11

Continents are the product of mountain building at ancient ________ boundaries.

Accepted Answer

A)   transform
B)   divergent
C)   convergent
D)   decorticateE) B) and D)
F) C) and D)

Question 12

Far-western North America contains a variety of fault bounded crustal blocks called ________ terranes.

Accepted Answer

A)   accreted
B)   island arc
C)   seamount
D)   ridgeE) None of the above
F) All of the above

Question 13

The western United States has

Accepted Answer

A)   low-density mantle that extends extraordinarily deep.
B)   high-density mantle very close to the surface.
C)   low-density mantle close to the surface.
D)   high-density mantle that extends very deep.E) A) and B)
F) B) and D)

Question 14

How does isostasy relate to active geologic processes?

Accepted Answer

Isostatic adjustments to changes in crus...

Question 15

If Earth's remaining glaciers melt, how would the global sea level change?

Accepted Answer

A)   hardly at all; most of the water would be absorbed by porous land and by increasing size of freshwater lakes and rivers
B)   the sea level would rise about 8 m
C)   the sea level would rise about 80 m
D)   the sea level would rise about 120 mE) All of the above
F) C) and D)

Question 16

The elevations of continents and oceans vary from each other because

Accepted Answer

A)   oceanic crust is thinner and denser than continental crust.
B)   oceanic crust is thinner and less dense than continental crust.
C)   oceanic crust is thicker and denser than continental crust.
D)   oceanic crust is thicker and less dense than continental crust.E) B) and D)
F) All of the above

Question 17

What is the main factor that determines elevation?

Accepted Answer

A)   crust type
B)   mantle density
C)   age of rock, such as amount of erosion
D)   history of rock, such as ice ages and volcanic actionE) B) and C)
F) C) and D)

Question 18

A model for Earth elevation based on oceanic crust being thinner than continental crust and oceanic crust being denser than continental crust results in

Accepted Answer

A)   continental crust and oceanic crust having the same densities.
B)   continental and oceanic crust being too thick.
C)   continental crust being denser than oceanic crust.
D)   reasonable estimates of crustal thickness and crustal densities.E) A) and B)
F) C) and D)

Question 19

A model for Earth elevation based only on oceanic crust being thinner than continental crust results in

Accepted Answer

A)   oceanic crust being denser than continental crust.
B)   continental crust being denser than oceanic crust.
C)   continental crust and oceanic crust having the same densities.
D)   reasonable estimates of crustal thickness and crustal densities.E) B) and C)
F) B) and D)

Question 20

How was the Coast Range in Oregon and Washington formed?

Accepted Answer

A)   thrust and uplift of continental crust
B)   accretion by subduction zones
C)   as a volcanic island arc
D)   sea mounts and island volcanoesE) None of the above
F) B) and D)

Exam 13: Tectonics and Surface Relief

Which of the following is not an effect of tension?

Correct Answer
verified

A model for Earth elevation based on oceanic crust being thinner than continental crust and oceanic crust being denser than continental crust results in

Correct Answer
verified

If Earth's remaining glaciers melt, how would the global sea level change?

Correct Answer
verified

What is the ratio of sea to land on Earth?

Correct Answer
verified

What does the principle of isostasy explain?

Correct Answer
verified

The elevations of continents and oceans vary from each other because

Correct Answer
verified

How could the Himalayan Mountains be getting taller?

Correct Answer
verified
Because the Indian plate is sl...
View Answer

The principle of isostasy tells us that the key factor(s) determining the elevation of a floating object is(are)

Correct Answer
verified

All past changes in sea level were due to the growth and demise of glaciers.

Correct Answer
verified

How does isostasy relate to active geologic processes?

Correct Answer
verified
Isostatic adjustments to changes in crus...
View Answer

A model for Earth elevation based only on oceanic crust being thinner than continental crust results in

Correct Answer
verified

How was the Coast Range in Oregon and Washington formed?

Correct Answer
verified

The depth of the crust does not depend on

Correct Answer
verified

The western United States has

Correct Answer
verified

Continents are the product of mountain building at ancient ________ boundaries.

Correct Answer
verified

Which of the following surface elevations is clearly underlain by oceanic crust?

Correct Answer
verified

What is the main factor that determines elevation?

Correct Answer
verified

Far-western North America contains a variety of fault bounded crustal blocks called ________ terranes.

Correct Answer
verified

How does isostasy explain the formation of rift valleys?

Correct Answer
verified

Correct Answer
verified

Exam 13: Tectonics and Surface Relief

Which of the following is not an effect of tension?

Correct AnswerverifiedShow Answer

A model for Earth elevation based on oceanic crust being thinner than continental crust and oceanic crust being denser than continental crust results in

Correct AnswerverifiedShow Answer

If Earth's remaining glaciers melt, how would the global sea level change?

Correct AnswerverifiedShow Answer

What is the ratio of sea to land on Earth?

Correct AnswerverifiedShow Answer

What does the principle of isostasy explain?

Correct AnswerverifiedShow Answer

The elevations of continents and oceans vary from each other because

Correct AnswerverifiedShow Answer

How could the Himalayan Mountains be getting taller?

Correct AnswerverifiedBecause the Indian plate is sl...View AnswerShow Answer

The principle of isostasy tells us that the key factor(s) determining the elevation of a floating object is(are)

Correct AnswerverifiedShow Answer

All past changes in sea level were due to the growth and demise of glaciers.

Correct AnswerverifiedShow Answer

How does isostasy relate to active geologic processes?

Correct AnswerverifiedIsostatic adjustments to changes in crus...View AnswerShow Answer

A model for Earth elevation based only on oceanic crust being thinner than continental crust results in

Correct AnswerverifiedShow Answer

How was the Coast Range in Oregon and Washington formed?

Correct AnswerverifiedShow Answer

The depth of the crust does not depend on

Correct AnswerverifiedShow Answer

The western United States has

Correct AnswerverifiedShow Answer

Continents are the product of mountain building at ancient ________ boundaries.

Correct AnswerverifiedShow Answer

Which of the following surface elevations is clearly underlain by oceanic crust?

Correct AnswerverifiedShow Answer

What is the main factor that determines elevation?

Correct AnswerverifiedShow Answer

Far-western North America contains a variety of fault bounded crustal blocks called ________ terranes.

Correct AnswerverifiedShow Answer

How does isostasy explain the formation of rift valleys?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Because the Indian plate is sl...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Isostatic adjustments to changes in crus...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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