Question 1

Which of the following lines of evidence was used by Alfred Wegener to support his theory of continental drift?

Accepted Answer

A)   All of the answers listed here.
B)   Fit of the continents.
C)   Similar rock sequences on different continents.
D)   Similar plant & animal fossils on different continents.
E)   Glacial deposits on continents in the southern hemisphere.F) A) and C)
G) A) and B)

Question 2

Which of the following best describes Earth's mantle?

Accepted Answer

A)   high-density rock
B)   metallic liquid
C)   metallic solid
D)   low-density rock
E)   pure carbonF) A) and C)
G) A) and B)

Question 3

What best describes why the upper part of the mantle, called the asthenosphere, is important in plate tectonics?

Accepted Answer

A)   It is hot and plastic like, which allows the overlying plates to slide or move.
B)   It is the source of metallic minerals that form valuable ore deposits within the plates.
C)   It is the place where plates originate.
D)   It is the source of carbon that gets transformed into oil and gas within the plates.
E)   It is cold and dense, which keeps the oceans in the overlying plates relatively cool.F) B) and E)
G) A) and D) A

Question 4

Earthquakes and volcanic eruptions are randomly distributed on the Earth.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following best describes the source of Earth's internal heat?

Accepted Answer

A)   Internal friction and radioactive decay in Earth's interior.
B)   The sun and residual heat from the planet's formation.
C)   The sun and radioactive decay in Earth's interior.
D)   Internal friction and the sun.
E)   Internal friction & and heat generated by tidal forces.F) C) and D)
G) None of the above

Question 6

Which of the following is the type of force that causes rocks to be extended, or pulled apart?

Accepted Answer

A)   tension
B)   compression
C)   shear
D)   transverse
E)   gravityF) B) and E)
G) A) and B)

Question 7

What best describes how the behavior of rocks changes when they become deeply buried and placed under high levels of heat and pressure?

Accepted Answer

A)   They become ductile and deform plastically.
B)   They become brittle and deform by fracturing.
C)   They become harder and develop gravity fractures.
D)   They become more resistant to deformation.
E)   They begin to transform into metallic minerals.F) A) and B)
G) B) and E)

Question 8

Earth's oceanic crust is considerably thicker than continental crust.

Accepted Answer

A) True 
 B)False

Question 9

At what type of plate boundary would you expect to find new oceanic crust being created?

Accepted Answer

A)   divergent
B)   convergent
C)   transform
D)   subduction Zone
E)   transverseF) A) and E)
G) B) and D) A

Question 10

During which of the following processes is oceanic crust recycled?

Accepted Answer

A)   subduction
B)   sea floor spreading
C)   convection
D)   mid-ocean rifting
E)   ocean tidesF) A) and E)
G) A) and D)

Question 11

Which of the following provide scientists with evidence that Earth's interior has distinct layers?

Accepted Answer

A)   Behavior of seismic waves traveling through Earth's interior.
B)   The effect of the Moon on Earth's tidal forces and solid rock.
C)   Drilling of deep oil and gas wells.
D)   Differences in gravity within Earth's interior.
E)   Mapping of the deep ocean floor.F) All of the above
G) B) and D)

Question 12

Which of the following best describes Earth's outer core?

Accepted Answer

A)   metallic liquid
B)   metallic solid
C)   low-density rock
D)   high-density rock
E)   pure carbonF) A) and D)
G) A) and B)

Question 13

Which of the following types of studies was the most critical in proving that sea-floor spreading actually occurs?

Accepted Answer

A)   Paleomagnetic studies of oceanic crust.
B)   Mapping of the ocean floor during World War I.
C)   Mapping of glacial ice in Greenland & Antarctica.
D)   Drilling oil and gas wells on the continental shelves.
E)   Studying volcanic eruptions around the Ring of Fire.F) B) and C)
G) A) and D)

Question 14

The San Andreas Fault in California is an example of which of the following types of plate boundaries?

Accepted Answer

A)   transform
B)   divergent
C)   convergent
D)   subduction zone
E)   transverseF) B) and E)
G) A) and C) A

Question 15

The Himalaya Mountains are an example of which of the following types of plate boundaries?

Accepted Answer

A)   continental-continental convergence
B)   continental-oceanic divergence
C)   oceanic-oceanic convergence
D)   oceanic-oceanic divergence
E)   continental-oceanic convergenceF) A) and E)
G) B) and E)

Question 16

Which of the following processes drives the movement of tectonic plates?

Accepted Answer

A)   convection cells in the mantle
B)   gravitational pull of the Moon
C)   ocean tides
D)   solar radiation
E)   all of the answers listed hereF) B) and D)
G) C) and E)

Question 17

At what type of plate boundary would you expect to see compressional forces dominate?

Accepted Answer

A)   convergent
B)   divergent
C)   transform
D)   transverse
E)   transvergentF) A) and C)
G) D) and E)

Question 18

The geographic location of the magnetic North Pole has varied over geologic time.

Accepted Answer

A) True 
 B)False

Question 19

When rocks are stressed beyond their elastic limit the deformation becomes permanent.

Accepted Answer

A) True 
 B)False

Question 20

At what type of plate boundary would you expect to find a volcanic island arc?

Accepted Answer

A)   oceanic-oceanic convergence
B)   continental-continental convergence
C)   continental-oceanic divergence
D)   continental-continental divergence
E)   oceanic-oceanic divergenceF) A) and E)
G) B) and E)

Exam 4: Earths Structure and Plate Tectonics

Which of the following lines of evidence was used by Alfred Wegener to support his theory of continental drift?

Correct AnswerverifiedShow Answer

Which of the following best describes Earth's mantle?

Correct AnswerverifiedShow Answer

What best describes why the upper part of the mantle, called the asthenosphere, is important in plate tectonics?

Correct AnswerverifiedA

Earthquakes and volcanic eruptions are randomly distributed on the Earth.

Correct AnswerverifiedShow Answer

Which of the following best describes the source of Earth's internal heat?

Correct AnswerverifiedShow Answer

Which of the following is the type of force that causes rocks to be extended, or pulled apart?

Correct AnswerverifiedShow Answer

What best describes how the behavior of rocks changes when they become deeply buried and placed under high levels of heat and pressure?

Correct AnswerverifiedShow Answer

Earth's oceanic crust is considerably thicker than continental crust.

Correct AnswerverifiedShow Answer

At what type of plate boundary would you expect to find new oceanic crust being created?

Correct AnswerverifiedA

During which of the following processes is oceanic crust recycled?

Correct AnswerverifiedShow Answer

Which of the following provide scientists with evidence that Earth's interior has distinct layers?

Correct AnswerverifiedShow Answer

Which of the following best describes Earth's outer core?

Correct AnswerverifiedShow Answer

Which of the following types of studies was the most critical in proving that sea-floor spreading actually occurs?

Correct AnswerverifiedShow Answer

The San Andreas Fault in California is an example of which of the following types of plate boundaries?

Correct AnswerverifiedA

The Himalaya Mountains are an example of which of the following types of plate boundaries?

Correct AnswerverifiedShow Answer

Which of the following processes drives the movement of tectonic plates?

Correct AnswerverifiedShow Answer

At what type of plate boundary would you expect to see compressional forces dominate?

Correct AnswerverifiedShow Answer

The geographic location of the magnetic North Pole has varied over geologic time.

Correct AnswerverifiedShow Answer

When rocks are stressed beyond their elastic limit the deformation becomes permanent.

Correct AnswerverifiedShow Answer

At what type of plate boundary would you expect to find a volcanic island arc?

Correct AnswerverifiedShow Answer

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