Question 1

Which of the following is associated with convergent plate boundaries on the seafloor?

Accepted Answer

A) crest of the mid-ocean ridge 
B) deep sea trenches 
C) deep focus earthquakes 
D) island arcs 
E) offset of the mid-ocean ridge 
A) crest of the mid-ocean ridge 
B) deep sea trenches 
C) deep focus earthquakes 
D) island arcs 
E) offset of the mid-ocean ridge

Question 2

Match between columns
                        Premises: depression along ridge axis
supercontinent 200 million years ago
study of changes in the character ofoceans due to geographic changes
ancient precursor of the Pacific Ocean
study of magnetism over geologic time

Accepted Answer

The Answer of paleomagnetism and rift valley and paleoceanography and is...

Question 3

The Mid-Atlantic Ridge is an example of a:

Accepted Answer

A) convergent boundary (continent-continent). 
B) convergent boundary (continent-oceanic). 
C) convergent boundary (oceanic-oceanic). 
D) divergent boundary. 
E) transform fault boundary. 
A) convergent boundary (continent-continent). 
B) convergent boundary (continent-oceanic). 
C) convergent boundary (oceanic-oceanic). 
D) divergent boundary. 
E) transform fault boundary.

Question 4

Which of the following statements is true of the asthenosphere?

Accepted Answer

A) The asthenosphere is composed of continental and oceanic plates. 
B) The asthenosphere is composed of outer mantle material. 
C) The asthenosphere is composed of the crust and a portion of the outer mantle. 
D) The asthenosphere is composed of the inner portion of the mantle and the outer core. 
E) The asthenosphere is composed only of crust. 
A) The asthenosphere is composed of continental and oceanic plates. 
B) The asthenosphere is composed of outer mantle material. 
C) The asthenosphere is composed of the crust and a portion of the outer mantle. 
D) The asthenosphere is composed of the inner portion of the mantle and the outer core. 
E) The asthenosphere is composed only of crust.

Question 5

Differences in height between continental crust and oceanic crust are explained by:

Accepted Answer

A) continental drift. 
B) density. 
C) isostasy. 
D) ophiolites. 
E) paleomagnetism. 
A) continental drift. 
B) density. 
C) isostasy. 
D) ophiolites. 
E) paleomagnetism.

Question 6

Deep ocean trenches are associated with:

Accepted Answer

A) rift valleys. 
B) subduction zones. 
C) submarine canyons. 
D) transform faults. 
E) turbidity currents. 
A) rift valleys. 
B) subduction zones. 
C) submarine canyons. 
D) transform faults. 
E) turbidity currents.

Question 7

Paleomagnetism confirms that at particular times in the geologic past Earth has had more than one magnetic north pole.

Accepted Answer

A) True 
 B)False

Question 8

Match between columns
                        Premises: mountains
oceanic trench
hydrothermal vents
island arc
rift valley
volcanoes

Accepted Answer

The Answer of divergent plate boundary and convergent plate boundary is...

Question 9

Which of the following statements best describes the relationship between Earth's geographic and magnetic poles?

Accepted Answer

A) The geographic pole and the magnetic pole are always the same. 
B) The geographic pole wobbles,but stays near the magnetic pole. 
C) The geographic poles have reversed themselves periodically through geologic time. 
D) The location of the magnetic pole is unrelated to the location of the geographic pole. 
E) The magnetic pole wobbles,but stays near the geographic pole. 
A) The geographic pole and the magnetic pole are always the same. 
B) The geographic pole wobbles,but stays near the magnetic pole. 
C) The geographic poles have reversed themselves periodically through geologic time. 
D) The location of the magnetic pole is unrelated to the location of the geographic pole. 
E) The magnetic pole wobbles,but stays near the geographic pole.

Question 10

Deep focus earthquakes are often associated with deep-sea trenches.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

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

Question 12

The magnetic field of the Earth reverses itself each time that magma erupts at a mid-ocean ridge.

Accepted Answer

A) True 
 B)False

Question 13

Oceans become deeper moving away from ridges due to:

Accepted Answer

A) decreasing thickness of the lithosphere. 
B) increasing density of oceanic basalts. 
C) increases in sediment accumulations. 
D) polar wandering. 
E) thermal contraction of hot asthenosphere. 
A) decreasing thickness of the lithosphere. 
B) increasing density of oceanic basalts. 
C) increases in sediment accumulations. 
D) polar wandering. 
E) thermal contraction of hot asthenosphere.

Question 14

The Hawaiian Islands are located where the Pacific plate is:

Accepted Answer

A) being subducted beneath the North American plate. 
B) being subducted beneath Japan. 
C) being thrust over the North American plate. 
D) diving under Japan. 
E) moving over a hot spot. 
A) being subducted beneath the North American plate. 
B) being subducted beneath Japan. 
C) being thrust over the North American plate. 
D) diving under Japan. 
E) moving over a hot spot.

Which of the following is associated with convergent plate boundaries on the seafloor?

The Mid-Atlantic Ridge is an example of a:

Which of the following statements is true of the asthenosphere?

Differences in height between continental crust and oceanic crust are explained by:

Deep ocean trenches are associated with:

Paleomagnetism confirms that at particular times in the geologic past Earth has had more than one magnetic north pole.

Which of the following statements best describes the relationship between Earth's geographic and magnetic poles?

Deep focus earthquakes are often associated with deep-sea trenches.

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

The magnetic field of the Earth reverses itself each time that magma erupts at a mid-ocean ridge.

Oceans become deeper moving away from ridges due to:

The Hawaiian Islands are located where the Pacific plate is:

Introduction to Planet Earth

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Exam 2: Plate Tectonics and the Ocean Floor

Which of the following is associated with convergent plate boundaries on the seafloor?

The Mid-Atlantic Ridge is an example of a:

Which of the following statements is true of the asthenosphere?

Differences in height between continental crust and oceanic crust are explained by:

Deep ocean trenches are associated with:

Paleomagnetism confirms that at particular times in the geologic past Earth has had more than one magnetic north pole.

Which of the following statements best describes the relationship between Earth's geographic and magnetic poles?

Deep focus earthquakes are often associated with deep-sea trenches.

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

The magnetic field of the Earth reverses itself each time that magma erupts at a mid-ocean ridge.

Oceans become deeper moving away from ridges due to:

The Hawaiian Islands are located where the Pacific plate is:

Introduction to Planet Earth

Marine Provinces

Marine Sediments

Water and Seawater

Air-Sea Interface

Ocean Circulation

Waves and Water Dynamics

Tides

The Coast: Beaches and Shoreline Processes

The Coastal Oceans

Marine Life and the Marine Environment

Biological Productivity and Energy Transfer

Animals of the Pelagic Environment

Animals of the Benthic Environment

Filters