Question 1

Compared with oceanic crust,continental crust is very buoyant because it is

Accepted Answer

A)  composed of basaltic rock that contains air bubbles from successive lava flows.
B)  composed of granitic rocks whereas oceanic crust is composed of basaltic rocks.
C)  thinner and forms a thin upper skin on the oceanic crust below.
D)  very young and fresh.

Question 2

What evidence was used to support magnetic pole reversals?

Accepted Answer

A)  apparent polar wandering and alternating magnetic stripe patterns on the ocean floor
B)  paleomagnetism
C)  normal and reverse polarity
D)  continental drift and seafloor spreading

Question 3

The theory of continental drift is supported by paleoclimate data,paleontology,and

Accepted Answer

A)  paleomagnetic data.
B)  seafloor spreading.
C)  transform boundaries.
D)  the jig-saw fit of the continents at their continental margins.

Question 4

Earth's internal layers were discovered by studying the propagation of P- and S- waves through Earth's interior.In comparison to P-waves,the movement of S-waves are

Accepted Answer

A)  faster and compresses and expands the rock as they move through it.
B)  faster and vibrates rock particles up and down and side-to-side.
C)  slower and can travel through solid granite,magma,water or air.
D)  slower and they can only travel through solids,not liquids.

Question 5

Damage from an earthquake is most severe when the

Accepted Answer

A)  epicenter is close to the surface.
B)  surface material is composed of unconsolidated sediments.
C)  buildings and structures are poorly constructed.
D)  all of the above

Question 6

The dominant force at convergent boundaries is

Accepted Answer

A)  compression.
B)  tension.
C)  shearing.
D)  similar to that in normal faulting.

Question 7

What simple observation inspired Alfred Wegener's hypothesis of continental drift?

Accepted Answer

The jig-saw puzzle fit of Sout...

Question 8

The occurrence of earthquakes in the absence of seafloor spreading,oceanic trenches,or volcanic activity is a characteristic feature of

Accepted Answer

A)  convergent boundaries between plates.
B)  divergent boundaries between plates.
C)  subduction zones.
D)  transform fault boundaries between plates.

Question 9

Plate tectonics differs from continental drift because it

Accepted Answer

A)  provides a credible driving force.
B)  did not explain the fit between South America and Africa.
C)  showed that ancient ice sheets did not exist.
D)  showed that Pangaea broke up much later than predicted.

Question 10

The San Andreas fault

Accepted Answer

A)  stretches from the Gulf of California to Cape Mendocino,California,and separates the Pacific Plate from the North American Plate.
B)  accommodates all the motion between the Pacific Plate and the North American Plate.
C)  is presently inactive.
D)  all of the above

Question 11

In comparison to P-waves,S-waves

Accepted Answer

A)  compress and expand the rock as they move through it.
B)  can travel through all mediums-solid granite,magma,water and/or air.
C)  can travel only through solids-not in fluids.
D)  are fast and the first to register on a seismograph.

Question 12

According to the theory of seafloor spreading,molten rock is rising up along

Accepted Answer

A)  the mid-ocean ridges.
B)  trenches that border continental margins.
C)  islands surrounding the Pacific volcanic rim.
D)  areas of sinking seafloor.

Question 13

The concept of seafloor spreading states that

Accepted Answer

A)  Earth is expanding.
B)  seafloor is created at mid-ocean ridges and destroyed at deep ocean trenches.
C)  sea level is rising.
D)  earthquakes occur underwater.

Question 14

What geologic features are explained by plate tectonics?

Accepted Answer

Mountain ranges,volcanoes,plut...

Question 15

The energy in an earthquake is released

Accepted Answer

A)  all at once.
B)  before the quake,after the quake,and during the quake.
C)  as an epicenter focus.
D)  in unconsolidated rock.

Question 16

Compression cannot produce

Accepted Answer

A)  anticlines.
B)  synclines.
C)  normal faults.
D)  reverse faults.

Question 17

P-waves travel faster through the inner core than the outer core because the inner core is

Accepted Answer

A)  hotter than the outer core.
B)  the same as the outer core.
C)  rock.
D)  solid.

Question 18

What are glacial striations,and how did Wegener use them to support his hypothesis of continental drift?

Accepted Answer

Glacial striations are gouges or grooves...

Question 19

Magnetic surveys of the ocean floors reveal

Accepted Answer

A)  alternating stripes of normal and reversed polarity paralleling the mid-Atlantic ridge.
B)  thin oceanic crust composed of basaltic rocks.
C)  that reversed polarity is rare.
D)  all of the above.

Question 20

In comparison to S-waves,P-waves

Accepted Answer

A)  vibrate the particles of their medium up and down and side-to-side.
B)  can travel through solid granite,magma,water and/or air.
C)  can travel only through solids,not through fluids.
D)  are the second seismic wave to register on a seismograph.

Exam 21: Plate Tectonics and Earths Interior

The theory of continental drift is supported by paleoclimate data,paleontology,and

Correct AnswerverifiedShow Answer

In comparison to S-waves,P-waves

Correct AnswerverifiedShow Answer

Earth's internal layers were discovered by studying the propagation of P- and S- waves through Earth's interior.In comparison to P-waves,the movement of S-waves are

Correct AnswerverifiedShow Answer

What are glacial striations,and how did Wegener use them to support his hypothesis of continental drift?

Correct AnswerverifiedGlacial striations are gouges or grooves...View AnswerShow Answer

What geologic features are explained by plate tectonics?

Correct AnswerverifiedMountain ranges,volcanoes,plut...View AnswerShow Answer

According to the theory of seafloor spreading,molten rock is rising up along

Correct AnswerverifiedShow Answer

The energy in an earthquake is released

Correct AnswerverifiedShow Answer

The concept of seafloor spreading states that

Correct AnswerverifiedShow Answer

In comparison to P-waves,S-waves

Correct AnswerverifiedShow Answer

Compression cannot produce

Correct AnswerverifiedShow Answer

What simple observation inspired Alfred Wegener's hypothesis of continental drift?

Correct AnswerverifiedThe jig-saw puzzle fit of Sout...View AnswerShow Answer

Magnetic surveys of the ocean floors reveal

Correct AnswerverifiedShow Answer

Compared with oceanic crust,continental crust is very buoyant because it is

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The San Andreas fault

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Damage from an earthquake is most severe when the

Correct AnswerverifiedShow Answer

P-waves travel faster through the inner core than the outer core because the inner core is

Correct AnswerverifiedShow Answer

Plate tectonics differs from continental drift because it

Correct AnswerverifiedShow Answer

The occurrence of earthquakes in the absence of seafloor spreading,oceanic trenches,or volcanic activity is a characteristic feature of

Correct AnswerverifiedShow Answer

What evidence was used to support magnetic pole reversals?

Correct AnswerverifiedShow Answer

The dominant force at convergent boundaries is

Correct AnswerverifiedShow Answer

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Glacial striations are gouges or grooves...
View Answer

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Mountain ranges,volcanoes,plut...
View Answer

Correct Answer
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The jig-saw puzzle fit of Sout...
View Answer

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