Question 1

Compare and contrast a convergent boundary involving two continental plates with a convergent boundary involving two oceanic plates.

Accepted Answer

At an ocean-ocean convergent plate bound...

Question 2

Which basic type of plate boundary is shown in the image below?

Accepted Answer

A)   Divergent
B)   Convergent
C)   Transvergent
D)   TransformE) A) and B)
F) A) and C)

Question 3

Hot-spot tracks result from moving

Accepted Answer

A)   mantle plumes.
B)   plates.
C)   hot spots.
D)   asthenosphere.E) C) and D)
F) All of the above B

Question 4

Mid-ocean ridges are segmented and contain which two basic types of plate boundaries linked together?

Accepted Answer

A)   divergent and convergent
B)   convergent and transform
C)   divergent and transform
D)   divergent and hot spotE) B) and C)
F) None of the above

Question 5

Which basic type of plate boundary is shown in the image below?

Accepted Answer

A)   Divergent
B)   Convergent
C)   Transvergent
D)   TransformE) A) and C)
F) A) and D)

Question 6

Most of the pushing force driving plate motion is produced

Accepted Answer

A)   at mid-ocean ridges.
B)   at subduction zones.
C)   at collision zones.
D)   in the interiors of continental plates.E) A) and B)
F) None of the above

Question 7

Most of the pulling force driving plate motion is produced

Accepted Answer

A)   at mid-ocean ridges.
B)   at subduction zones.
C)   at collision zones.
D)   in the interiors of continental plates.E) None of the above
F) A) and B)

Question 8

Compared to typical oceanic lithosphere,the thickness of continental lithosphere is

Accepted Answer

A)   less.
B)   greater.
C)   approximately the same.
D)   There is not a consistent pattern of lithospheric thickness.E) All of the above
F) B) and C)

Question 9

The image below shows a view of a typical segmented mid-ocean ridge.Which letter below marks the location of the active transform fault?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) All of the above
F) C) and D)

Question 10

Slab pull occurs because subducting slabs are ________,and therefore ________ dense,than surrounding asthenosphere.

Accepted Answer

A)   less mafic; less
B)   cooler; more
C)   hotter; more
D)   cooler; lessE) C) and D)
F) A) and B)

Question 11

A geologist measures the amount of seafloor produced along an MOR to be 45 km.The oldest crust produced is 4.5 Ma.What is the spreading rate of the MOR in centimeters per year? Show your work.

Accepted Answer

$\text { First convert km to } \mathrm{cm}: \frac{45 \mathrm{~km}}{1} \times \frac{1000 \mathrm{~m}}{1 \mathrm{~km}} \times \frac{100 \mathrm{~cm}}{1 \mathrm{~m}}=4,500,000 \mathrm{~cm}$

$\text { Convert Ma to yr: } \frac{4.5 \mathrm{Ma}}{1} \times \frac{1,000,000 \mathrm{yr}}{1 \mathrm{ma}}=4,500,000 \mathrm{yr}$

$\text { Plug into } \mathrm{v}=\mathrm{d} / \mathrm{t}:=\frac{4,500,000 \mathrm{~cm}}{4,500,000 \mathrm{yr}}=\frac{\mathrm{cm}}{\mathrm{yr}}$

Question 12

Segments of mid-ocean ridge systems are offset.Between the offset segments we observe

Accepted Answer

A)   a second series of ridges,perpendicular to the main set.
B)   deep-ocean trenches.
C)   transform boundaries.
D)   hot spots.E) None of the above
F) B) and D)

Question 13

Deep-oceanic trenches are features of ________ plate boundaries.

Accepted Answer

A)   divergent
B)   convergent
C)   transvergent
D)   transformE) A) and B)
F) None of the above

Question 14

Describe the process of seafloor spreading.In your answer,please be sure to address why the diameter of the Earth is not growing.

Accepted Answer

As plates move apart at a divergent plat...

Question 15

Unlike the lithosphere,the asthenosphere

Accepted Answer

A)   is able to flow over long periods of time.
B)   has a density similar to the core.
C)   varies in thickness from place to place.
D)   is relatively cool.E) None of the above
F) A) and D)

Question 16

Describe the global distribution of earthquakes and provide an explanation for this pattern.

Accepted Answer

Most earthquakes take place along narrow...

Question 17

__________ proposed the continental drift hypothesis.

Accepted Answer

A)   Harry Hess
B)   Charles Darwin
C)   Charles Lyell
D)   Alfred WegenerE) A) and B)
F) B) and D) D

Question 18

The theory of plate tectonics

Accepted Answer

A)   incorporates and explains continental drift but not seafloor spreading.
B)   incorporates and explains seafloor spreading but not continental drift.
C)   incorporates and explains both seafloor spreading and continental drift.
D)   does not incorporate or explain seafloor spreading or continental drift.E) C) and D)
F) A) and D)

Question 19

__________ proposed seafloor spreading.

Accepted Answer

A)   Harry Hess
B)   Charles Darwin
C)   Charles Lyell
D)   Alfred WegenerE) B) and D)
F) None of the above

Question 20

Large,thick-crusted,nonvolcanic mountain belts,like the Himalayas,are associated with

Accepted Answer

A)   mid-ocean ridges.
B)   hot spots.
C)   subduction zones.
D)   continent-continent collisions.E) B) and D)
F) A) and B)

Exam 4: The Way the Earth Works: Plate Tectonics

Compare and contrast a convergent boundary involving two continental plates with a convergent boundary involving two oceanic plates.

Correct Answer
verified
At an ocean-ocean convergent plate bound...
View Answer

Which basic type of plate boundary is shown in the image below?

Correct Answer
verified

Hot-spot tracks result from moving

Correct Answer
verified
B

Mid-ocean ridges are segmented and contain which two basic types of plate boundaries linked together?

Correct Answer
verified

Which basic type of plate boundary is shown in the image below?

Correct Answer
verified

Most of the pushing force driving plate motion is produced

Correct Answer
verified

Most of the pulling force driving plate motion is produced

Correct Answer
verified

Compared to typical oceanic lithosphere,the thickness of continental lithosphere is

Correct Answer
verified

The image below shows a view of a typical segmented mid-ocean ridge.Which letter below marks the location of the active transform fault?

Correct Answer
verified

Slab pull occurs because subducting slabs are ,and therefore dense,than surrounding asthenosphere.

Correct Answer
verified

A geologist measures the amount of seafloor produced along an MOR to be 45 km.The oldest crust produced is 4.5 Ma.What is the spreading rate of the MOR in centimeters per year? Show your work.

Segments of mid-ocean ridge systems are offset.Between the offset segments we observe

Correct Answer
verified

Deep-oceanic trenches are features of ________ plate boundaries.

Correct Answer
verified

Describe the process of seafloor spreading.In your answer,please be sure to address why the diameter of the Earth is not growing.

Correct Answer
verified
As plates move apart at a divergent plat...
View Answer

Unlike the lithosphere,the asthenosphere

Correct Answer
verified

Describe the global distribution of earthquakes and provide an explanation for this pattern.

Correct Answer
verified
Most earthquakes take place along narrow...
View Answer

__________ proposed the continental drift hypothesis.

Correct Answer
verified
D

The theory of plate tectonics

Correct Answer
verified

__________ proposed seafloor spreading.

Correct Answer
verified

Large,thick-crusted,nonvolcanic mountain belts,like the Himalayas,are associated with

Correct Answer
verified

Exam 4: The Way the Earth Works: Plate Tectonics

Compare and contrast a convergent boundary involving two continental plates with a convergent boundary involving two oceanic plates.

Correct AnswerverifiedAt an ocean-ocean convergent plate bound...View AnswerShow Answer

Which basic type of plate boundary is shown in the image below?

Correct AnswerverifiedShow Answer

Hot-spot tracks result from moving

Correct AnswerverifiedB

Mid-ocean ridges are segmented and contain which two basic types of plate boundaries linked together?

Correct AnswerverifiedShow Answer

Which basic type of plate boundary is shown in the image below?

Correct AnswerverifiedShow Answer

Most of the pushing force driving plate motion is produced

Correct AnswerverifiedShow Answer

Most of the pulling force driving plate motion is produced

Correct AnswerverifiedShow Answer

Compared to typical oceanic lithosphere,the thickness of continental lithosphere is

Correct AnswerverifiedShow Answer

The image below shows a view of a typical segmented mid-ocean ridge.Which letter below marks the location of the active transform fault?

Correct AnswerverifiedShow Answer

Slab pull occurs because subducting slabs are ________,and therefore ________ dense,than surrounding asthenosphere.

Correct AnswerverifiedShow Answer

A geologist measures the amount of seafloor produced along an MOR to be 45 km.The oldest crust produced is 4.5 Ma.What is the spreading rate of the MOR in centimeters per year? Show your work.

Segments of mid-ocean ridge systems are offset.Between the offset segments we observe

Correct AnswerverifiedShow Answer

Deep-oceanic trenches are features of ________ plate boundaries.

Correct AnswerverifiedShow Answer

Describe the process of seafloor spreading.In your answer,please be sure to address why the diameter of the Earth is not growing.

Correct AnswerverifiedAs plates move apart at a divergent plat...View AnswerShow Answer

Unlike the lithosphere,the asthenosphere

Correct AnswerverifiedShow Answer

Describe the global distribution of earthquakes and provide an explanation for this pattern.

Correct AnswerverifiedMost earthquakes take place along narrow...View AnswerShow Answer

__________ proposed the continental drift hypothesis.

Correct AnswerverifiedD

The theory of plate tectonics

Correct AnswerverifiedShow Answer

__________ proposed seafloor spreading.

Correct AnswerverifiedShow Answer

Large,thick-crusted,nonvolcanic mountain belts,like the Himalayas,are associated with

Correct AnswerverifiedShow Answer

Correct Answer
verified
At an ocean-ocean convergent plate bound...
View Answer

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Slab pull occurs because subducting slabs are ,and therefore dense,than surrounding asthenosphere.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
As plates move apart at a divergent plat...
View Answer

Correct Answer
verified

Correct Answer
verified
Most earthquakes take place along narrow...
View Answer

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified