Question 1

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Accepted Answer

A)   oceanic ridge 
B)   seafloor spreading 
C)   arc volcanoes 
D)   divergentE) A) and D)
F) C) and D)

Question 2

A(n) ________ is a long-lived, stationary magma source deep in the mantle, well below the base of the lithosphere.

Accepted Answer

The answer of A(n) ________ is a long-lived, stationary magma...

Question 3

Matching. Match the plate boundary with the appropriate phrase.
-characterized by arcs of stratovolcanoes and deep-ocean trenches

Accepted Answer

A)  convergent
B)  transform
C)  divergentD) All of the above
E) None of the above

Question 4

During various times in the geologic past, the polarity of Earth's magnetic field has been reversed.

Accepted Answer

A) True 
 B)False

Question 5

Which one of the following is an important fundamental assumption underlying the plate tectonic theory?

Accepted Answer

A)   Earth's magnetic field originates in the outer core.
B)   Earth's diameter has been essentially constant over time.
C)   Radioactive decay slows down at the extreme pressures of the inner core.
D)   Earth's ocean basins are very old and stable features.E) A) and B)
F) A) and C)

Question 6

The modern-day Red Sea is explained by plate tectonics theory because it is ________.

Accepted Answer

A)   a tiny remnant of a once immense ocean that was closed as Africa moved toward Asia
B)   the site of a transform fault along which Arabia is moving away from Africa
C)   a rift zone that may eventually open into a major ocean if Arabia and Africa continue to separate
D)   a rare example of a two-continent subduction zone where the African continental plate is sinking under the Arabian continental plateE) All of the above
F) C) and D)

Question 7

Deep ocean trenches are surficial evidence for ________.

Accepted Answer

A)   rifting beneath a continental plate and the beginning of continental drift
B)   sinking of oceanic lithosphere into the mantle at a subduction zone
C)   rising of hot asthenosphere from deep in the mantle
D)   transform faulting between an oceanic plate and a continental plateE) C) and D)
F) B) and D)

Question 8

Pull-apart rift zones are generally associated with a ________ plate boundary.

Accepted Answer

A)   transform
B)   divergent
C)   convergent
D)   all plate boundariesE) A) and B)
F) A) and C)

Question 9

An extensive, late Paleozoic glaciation affected southern India, southern Africa and southeastern South America.

Accepted Answer

A) True 
 B)False

Question 10

Matching. Match the plate boundary with the appropriate phrase.
-the San Andreas fault

Accepted Answer

A)  convergent
B)  transform
C)  divergentD) None of the above
E) B) and C)

Question 11

Matching. Match the plate boundary with the appropriate phrase.
-the west coast of South America

Accepted Answer

A)  convergent
B)  transform
C)  divergentD) None of the above
E) All of the above

Question 12

The ________ is (are)  a logical evolutionary analog of the African Rift Valleys ten million years from now.

Accepted Answer

A)   Ural Mountains
B)   San Andreas fault
C)   Peru-Chile trench
D)   Red SeaE) A) and B)
F) B) and D)

Question 13

Which of the following statements apply to the asthenosphere, but not the lithosphere?

Accepted Answer

A)   zone in the upper mantle that deforms by plastic flowage
B)   cool, rigid layer of crust and upper mantle that forms the tectonic plates
C)   deforms mainly by brittle fracturing and faulting
D)   partial melting of rising granitic plumes produces huge volumes of basaltic magmaE) A) and C)
F) C) and D)

Question 14

Where would you drill to recover samples of the oldest basalts of the oceanic crust, which are Jurassic in age?

Accepted Answer

A)   crest of the East Pacific, mid-ocean ridge
B)   oceanic side of the Aleutian trench
C)   just offshore from the Hawaiian Islands
D)   Mid-Atlantic Ridge under IcelandE) A) and D)
F) All of the above

Question 15

The Aleutian Islands occur at a ________.

Accepted Answer

A)   convergent boundary on a volcanic arc above a northward-subducting Pacific plate
B)   transform boundary where North America has moved towards Alaska
C)   divergent boundary where shield volcanoes are forming
D)   convergent, continental margin with uplifted fault blocks, much like those of the Basin and Range ProvinceE) A) and D)
F) None of the above

Question 16

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Accepted Answer

A)   Curie point 
B)   paleomagnetism 
C)   magnetic poles 
D)   polar wanderingE) A) and C)
F) A) and B)

Question 17

Which of the following paleoclimatic evidence supports the idea of the late Paleozoic supercontinent in the Southern Hemisphere?

Accepted Answer

A)   lithified loess (wind-blown)  deposits in the deserts of Chile, Australia, and Africa
B)   tillites (rocks formed by glaciers)  in South Africa and South America
C)   thick sediments in the Amazon and Congo deltas of South America and Africa
D)   cold water fossils in the deep-water sediments of the South Atlantic abyssal plainE) A) and B)
F) B) and D)

Question 18

________ first related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid-ocean ridge.

Accepted Answer

A)   Evans and Novak
B)   Vine and Matthews
C)   Matthews and Marks
D)   Wegener and WilsonE) B) and D)
F) All of the above

Question 19

The temperature below which magnetic material can retain a permanent magnetization is called the ________.

Accepted Answer

A)   Darcy temperature
B)   Vine temperature
C)   Bullard point
D)   Curie pointE) A) and D)
F) A) and B)

Question 20

Matching. Match the plate boundary with the appropriate phrase.
-plates are sliding past one another horizontally

Accepted Answer

A)  convergent
B)  transform
C)  divergentD) A) and B)
E) All of the above

Exam 7: Plate Tectonics: a Scientific Theory Unfolds

Pull-apart rift zones are generally associated with a ________ plate boundary.

Correct AnswerverifiedShow Answer

Which one of the following is an important fundamental assumption underlying the plate tectonic theory?

Correct AnswerverifiedShow Answer

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Correct AnswerverifiedShow Answer

Which of the following statements apply to the asthenosphere, but not the lithosphere?

Correct AnswerverifiedShow Answer

The ________ is (are) a logical evolutionary analog of the African Rift Valleys ten million years from now.

Correct AnswerverifiedShow Answer

Deep ocean trenches are surficial evidence for ________.

Correct AnswerverifiedShow Answer

Matching. Match the plate boundary with the appropriate phrase. -the San Andreas fault

Correct AnswerverifiedShow Answer

The modern-day Red Sea is explained by plate tectonics theory because it is ________.

Correct AnswerverifiedShow Answer

Where would you drill to recover samples of the oldest basalts of the oceanic crust, which are Jurassic in age?

Correct AnswerverifiedShow Answer

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Correct AnswerverifiedShow Answer

Matching. Match the plate boundary with the appropriate phrase. -the west coast of South America

Correct AnswerverifiedShow Answer

A(n) ________ is a long-lived, stationary magma source deep in the mantle, well below the base of the lithosphere.

Correct AnswerverifiedShow Answer

An extensive, late Paleozoic glaciation affected southern India, southern Africa and southeastern South America.

Correct AnswerverifiedShow Answer

During various times in the geologic past, the polarity of Earth's magnetic field has been reversed.

Correct AnswerverifiedShow Answer

The temperature below which magnetic material can retain a permanent magnetization is called the ________.

Correct AnswerverifiedShow Answer

The Aleutian Islands occur at a ________.

Correct AnswerverifiedShow Answer

Matching. Match the plate boundary with the appropriate phrase. -plates are sliding past one another horizontally

Correct AnswerverifiedShow Answer

________ first related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid-ocean ridge.

Correct AnswerverifiedShow Answer

Matching. Match the plate boundary with the appropriate phrase. -characterized by arcs of stratovolcanoes and deep-ocean trenches

Correct AnswerverifiedShow Answer

Which of the following paleoclimatic evidence supports the idea of the late Paleozoic supercontinent in the Southern Hemisphere?

Correct AnswerverifiedShow Answer

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