Question 1

Oceanic lithosphere subducts (sinks into the asthenosphere) because ________.

Accepted Answer

A)  old oceanic lithosphere is more dense that the asthenosphere
B)  the upwelling magma at divergent boundaries pushes the lithospheric plate into the asthenosphere
C)  the pressure from two plates colliding forces one plate into the asthenosphere
D)  The convection of the mantle pulls the lithosphere into the asthenosphereE) B) and D)
F) A) and B)

Question 2

Wegener suggested the thick continents moved through the thinner ocean crust.

Accepted Answer

A) True 
 B)False

Question 3

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) C) and D)
F) B) and D)

Question 4

The ________ is an example of an active,continent-continent collision.

Accepted Answer

A)  Arabian Peninsula slamming into North Africa under the Red Sea
B)  westward movement of the South American plate over the Nazca plate
C)  northern movement of Baja California and a sliver of western California toward the Hawaiian Islands
D)  northward movement of India into EurasiaE) B) and C)
F) All of the above

Question 5

Why do scientists think that lithosphere has to be destroyed somewhere on or in the earth?

Accepted Answer

A)  There is not enough lithosphere on the earth to account for what has been produced in the last 200 million years.
B)  Lithosphere is created at divergent boundaries and the earth is not getting any larger.
C)  The moon is moving away from the earth and this would not happen if the earth had more lithosphere to increase its mass.
D)  The earth is getting smaller as the new oceanic crust cools and contracts.E) A) and C)
F) A) and B)

Question 6

The figure below shows a ________ boundary.

Accepted Answer

A)  convergent
B)  divergent
C)  hot spot
D)  transformE) A) and B)
F) A) and C)

Question 7

slab pull mantle drag ridge push hot spot track

Accepted Answer

The answer of slab pull mantle drag ridge push hot...

Question 8

The lithosphere is the outer layer of the earth characterized by ________.

Accepted Answer

A)  soft rocks that flow easily
B)  hard rocks that break
C)  layers of both hard and soft rocks
D)  magmaE) A) and C)
F) B) and C)

Question 9

Continental rocks do not rift because they are too thick.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is not a type of plate boundary?

Accepted Answer

A)  hot spot
B)  transform
C)  convergent
D)  divergentE) A) and D)
F) B) and D)

Question 11

fossil evidence fit of the continents paleomagnetism ancient climates

Accepted Answer

The answer of fossil evidence fit of the continents paleomagnetism...

Question 12

Material that was once considered to be asthenosphere can change to lithosphere by ________.

Accepted Answer

A)  rising to a shallow level
B)  thickening to 100 km
C)  heating so that it will flow
D)  cooling so that it will breakE) B) and C)
F) B) and D)

Question 13

The former late Paleozoic supercontinent is known as ________.

Accepted Answer

A)  Pandomonia
B)  Pancakea
C)  Pangaea
D)  PanatopiaE) A) and B)
F) A) and C)

Question 14

Hawaii island arc volcanic arc subduction

Accepted Answer

The answer of Hawaii island arc volcanic arc subduction...

Question 15

The Himalayan Mountains are the tectonic product of a collision between India and Eurasia that began 50 million years ago and still continues.

Accepted Answer

A) True 
 B)False

Question 16

Fossils from the sea floor became older with increased distance from the ridges.

Accepted Answer

A) True 
 B)False

Question 17

The Himalayas formed as a result of ________.

Accepted Answer

A)  an ocean-ocean convergence
B)  an ocean-continent convergence
C)  a continent-continent convergence
D)  a hot spotE) A) and B)
F) A) and C)

Question 18

Which of the following is in a place where continental rifting is occurring today?

Accepted Answer

A)  Himalayan Mountains in India and surrounding regions
B)  Andes in South America
C)  Mt.Kilimanjaro in East Africa
D)  Mt.Fuji in JapanE) A) and B)
F) A) and C)

Question 19

Japan and the Aleutian Islands have formed from a(n)________ to ________ convergent boundary.

Accepted Answer

The answer of Japan and the Aleutian Islands have formed...

Question 20

Explain briefly why a divergent plate boundary is also called a "constructive margin or boundary."

Accepted Answer

Divergent plate boundaries are...

Exam 7: Plate Tectonics: a Scientific Revolution Unfolds

The Himalayas formed as a result of ________.

Correct AnswerverifiedShow Answer

Why do scientists think that lithosphere has to be destroyed somewhere on or in the earth?

Correct AnswerverifiedShow Answer

Explain briefly why a divergent plate boundary is also called a "constructive margin or boundary."

Correct AnswerverifiedDivergent plate boundaries are...View AnswerShow Answer

The figure below shows a ________ boundary.

Correct AnswerverifiedShow Answer

Continental rocks do not rift because they are too thick.

Correct AnswerverifiedShow Answer

The former late Paleozoic supercontinent is known as ________.

Correct AnswerverifiedShow Answer

The lithosphere is the outer layer of the earth characterized by ________.

Correct AnswerverifiedShow Answer

Which of the following is not a type of plate boundary?

Correct AnswerverifiedShow Answer

Japan and the Aleutian Islands have formed from a(n)________ to ________ convergent boundary.

Correct AnswerverifiedShow Answer

Fossils from the sea floor became older with increased distance from the ridges.

Correct AnswerverifiedShow Answer

The Himalayan Mountains are the tectonic product of a collision between India and Eurasia that began 50 million years ago and still continues.

Correct AnswerverifiedShow Answer

Material that was once considered to be asthenosphere can change to lithosphere by ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is in a place where continental rifting is occurring today?

Correct AnswerverifiedShow Answer

The ________ is an example of an active,continent-continent collision.

Correct AnswerverifiedShow Answer

Wegener suggested the thick continents moved through the thinner ocean crust.

Correct AnswerverifiedShow Answer

fossil evidence fit of the continents paleomagnetism ancient climates

Correct AnswerverifiedShow Answer

Hawaii island arc volcanic arc subduction

Correct AnswerverifiedShow Answer

slab pull mantle drag ridge push hot spot track

Correct AnswerverifiedShow Answer

Oceanic lithosphere subducts (sinks into the asthenosphere) because ________.

Correct AnswerverifiedShow Answer

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Divergent plate boundaries are...
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Japan and the Aleutian Islands have formed from a(n) to convergent boundary.

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