Question 1

Fossils of ancient polar plants are currently found near the equator because the:

Accepted Answer

A)  entire earth had polar conditions at the time the plants were living.
B)  plants lived near the poles,but land masses have drifted to current locations.
C)  plants probably were tolerant of both tropical and polar conditions.
D)  plants were distributed to current locations by ancient glacial ice sheets.
E)  poles were at the equator at times in the geologic past.F) All of the above
G) D) and E)

Question 2

Vine and Matthews determined that new ocean floor was being produced at ocean ridges by examining:

Accepted Answer

A)  apparent polar wandering.
B)  fossils in marine sediments.
C)  glacial debris at various locations.
D)  the location of ancient coral reefs.
E)  the magnetic pattern on the seafloor.F) A) and C)
G) A) and E)

Question 3

Earthquakes are common along fracture zones.

Accepted Answer

A) True 
 B)False

Question 4

All continents fit together with the least number of overlaps and gaps when the continents are matched along:

Accepted Answer

A)  contours at around 2000 meters in depth.
B)  current shorelines.
C)  edge of the continental shelf.
D)  edges of the deep sea floor.
E)  oceanic trenches in subduction zones.F) A) and E)
G) All of the above

Question 5

Continental drift was confirmed through the use of the:

Accepted Answer

A)  age of rocks on distant continents.
B)  location of ancient coral reefs.
C)  location of deep sea trenches.
D)  location of magnetic poles through geologic time.
E)  the shape of the continental margins.F) A) and B)
G) B) and E)

Question 6

Deep-sea trenches are found at convergent plate boundaries.

Accepted Answer

A) True 
 B)False  False

Question 7

At divergent plate boundaries,only shallow focus earthquakes can be found.

Accepted Answer

A) True 
 B)False

Question 8

All of the following provide evidence for continental drift except:

Accepted Answer

A)  age of selected continental rocks.
B)  apparent polar wandering.
C)  location of coral reef fossils.
D)  seafloor magnetic pattern.
E)  shape of continental margins.F) B) and C)
G) B) and E) D

Question 9

Climate distribution on Earth is primarily controlled by:

Accepted Answer

A)  Earth's geologic history.
B)  latitude.
C)  longitude.
D)  presence or absence of glacial debris.
E)  plants and animals that live in an area.F) None of the above
G) B) and D)

Question 10

Which of the following statements is true of the lithosphere?

Accepted Answer

A)  The lithosphere is composed of outer mantle material.
B)  The lithosphere is composed of igneous rock.
C)  The lithosphere is composed of metamorphic rock.
D)  The lithosphere is composed of the crust and the topmost portion of the outer mantle.
E)  The lithosphere is composed of the inner portion of the mantle and the outer core.F) B) and E)
G) C) and D)

Question 11

New crust is formed at trenches and old crust is subducted at ridges.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is characteristic of oceanic-continental convergent plate boundaries?

Accepted Answer

A)  andesitic volcanoes
B)  fracture zones
C)  hot spots
D)  mid-ocean ridges
E)  volcanic island arcsF) C) and D)
G) A) and B)

Question 13

Fossils found in sediments can be used to:

Accepted Answer

A)  indicate the relative age of the sediments.
B)  provide evidence for plate movement.
C)  suggest ancient climate characteristics.
D)  support the idea that land masses were joined.
E)  all of the above.F) A) and D)
G) A) and B)

Question 14

Confirmation of seafloor spreading was supported by the:

Accepted Answer

A)  age of seafloor.
B)  apparent polar wandering.
C)  magnetic reversals found in continental rocks.
D)  match of rocks from distant continents.
E)  sediment analysis from different areas of the seafloor.F) A) and B)
G) D) and E) A

Question 15

Fast-moving spreading ridges tend to be more gently sloped that slow-moving ridges.

Accepted Answer

A) True 
 B)False

Question 16

The relatively young age of the seafloor supports the idea that subduction must take place.

Accepted Answer

A) True 
 B)False

Question 17

The seafloor magnetic pattern is be best described as:

Accepted Answer

A)  not related to the location of oceanic ridges.
B)  parallel to and symmetric about ocean ridges.
C)  parallel to,but not symmetric about ocean ridges.
D)  perpendicular to and symmetric about ocean ridges.
E)  perpendicular to,but not symmetric about ocean ridges.F) A) and D)
G) B) and C)

Question 18

The magnetic north pole has remained very close to the geographic North Pole through all of geologic time.

Accepted Answer

A) True 
 B)False

Question 19

The oldest rocks are located at mid-ocean ridges.

Accepted Answer

A) True 
 B)False

Question 20

Moving from oceanic ridge to oceanic trench,the thickness of the lithosphere:

Accepted Answer

A)  decreases in proportion to the distance.
B)  is unrelated to the distance from the ridge.
C)  increases in proportion to the distance.
D)  randomly varies.
E)  remains the same.F) B) and D)
G) C) and D)

Exam 2: Plate Tectonics and the Ocean Floor

Fossils of ancient polar plants are currently found near the equator because the:

Correct AnswerverifiedShow Answer

Vine and Matthews determined that new ocean floor was being produced at ocean ridges by examining:

Correct AnswerverifiedShow Answer

Earthquakes are common along fracture zones.

Correct AnswerverifiedShow Answer

All continents fit together with the least number of overlaps and gaps when the continents are matched along:

Correct AnswerverifiedShow Answer

Continental drift was confirmed through the use of the:

Correct AnswerverifiedShow Answer

Deep-sea trenches are found at convergent plate boundaries.

Correct AnswerverifiedFalse

At divergent plate boundaries,only shallow focus earthquakes can be found.

Correct AnswerverifiedShow Answer

All of the following provide evidence for continental drift except:

Correct AnswerverifiedD

Climate distribution on Earth is primarily controlled by:

Correct AnswerverifiedShow Answer

Which of the following statements is true of the lithosphere?

Correct AnswerverifiedShow Answer

New crust is formed at trenches and old crust is subducted at ridges.

Correct AnswerverifiedShow Answer

Which of the following is characteristic of oceanic-continental convergent plate boundaries?

Correct AnswerverifiedShow Answer

Fossils found in sediments can be used to:

Correct AnswerverifiedShow Answer

Confirmation of seafloor spreading was supported by the:

Correct AnswerverifiedA

Fast-moving spreading ridges tend to be more gently sloped that slow-moving ridges.

Correct AnswerverifiedShow Answer

The relatively young age of the seafloor supports the idea that subduction must take place.

Correct AnswerverifiedShow Answer

The seafloor magnetic pattern is be best described as:

Correct AnswerverifiedShow Answer

The magnetic north pole has remained very close to the geographic North Pole through all of geologic time.

Correct AnswerverifiedShow Answer

The oldest rocks are located at mid-ocean ridges.

Correct AnswerverifiedShow Answer

Moving from oceanic ridge to oceanic trench,the thickness of the lithosphere:

Correct AnswerverifiedShow Answer

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False

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D

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A

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