Question 1

Name two features more likely to be characteristic of active margins.

Accepted Answer

trenches a...

Question 2

Submarine, basaltic lava flows chill quickly to form tube shaped protuberances called ________.

Accepted Answer

The answer of Submarine, basaltic lava flows chill quickly to...

Question 3

On average, the continental shelf is about ________ kilometres wide and ________ metres deep.

Accepted Answer

A)  20; 50
B)  80; 130
C)  400; 2000
D)  1800; 80E) None of the above
F) All of the above

Question 4

Seafloor hot springs occur mainly in oceanic, abyssal plains.

Accepted Answer

A) True 
 B)False

Question 5

________ are steep sided valleys that cut across the continental slope and may extend across the continental rise into the deep ocean basin.

Accepted Answer

The answer of ________ are steep sided valleys that cut...

Question 6

The most predominant characteristics of the mid-ocean ridge system are its elevated position, extensive (extensional)faulting, and numerous volcanic structures.

Accepted Answer

A) True 
 B)False

Question 7

A low lying, coral limestone island with a central lagoon is called an ________.

Accepted Answer

The answer of A low lying, coral limestone island with...

Question 8

The Atlantic and Pacific basins have oceanic ridges; the Indian Ocean has no oceanic ridge.

Accepted Answer

A) True 
 B)False

Question 9

________ and ________ comprise most biogenous sediments.

Accepted Answer

CaCO₃; SiO₂f...

Question 10

Why are the East Pacific Rise, the Gorda and Juan de Fuca Ridges all the way at the eastern side of the Pacific Ocean?

Accepted Answer

A)  The spreading in the Pacific is asymmetric and new ocean crust is mainly made on the western side of the ridge system.
B)  Half of the Pacific ocean basin has been overridden by or subducted beneath the plates of the Americas, and the Pacific plate is getting smaller.
C)  They are a really young tectonic features and have just jumped to start rifting on this side of the Pacific Ocean, which used to rift down it's middle near Hawaii.
D)  The geophysicists and oceanographers haven't got a clue and mapped them in the wrong location.E) A) and D)
F) All of the above

Question 11

What sedimentation rates typify the red or brown clays of the abyssal plains?

Accepted Answer

A)  > 5 metres per year
B)  1-5 centimetres per year
C)  1 centimetre per 500 years
D)  1 centimetre per 5,000 to 50,000 yearsE) B) and D)
F) B) and C)

Question 12

________ are the regions where basalt is the most abundant substrate exposed on the seabed.

Accepted Answer

The answer of ________ are the regions where basalt is...

Exam 11: The Ocean Floor

The Atlantic and Pacific basins have oceanic ridges; the Indian Ocean has no oceanic ridge.

Correct Answer
verified

Name two features more likely to be characteristic of active margins.

Correct Answer
verified
trenches a...
View Answer

and comprise most biogenous sediments.

Correct Answer
verified
CaCO₃; SiO₂f...
View Answer

On average, the continental shelf is about kilometres wide and metres deep.

Correct Answer
verified

________ are steep sided valleys that cut across the continental slope and may extend across the continental rise into the deep ocean basin.

Correct Answer
verified

Seafloor hot springs occur mainly in oceanic, abyssal plains.

Correct Answer
verified

A low lying, coral limestone island with a central lagoon is called an ________.

Correct Answer
verified

________ are the regions where basalt is the most abundant substrate exposed on the seabed.

Correct Answer
verified

Why are the East Pacific Rise, the Gorda and Juan de Fuca Ridges all the way at the eastern side of the Pacific Ocean?

Correct Answer
verified

The most predominant characteristics of the mid-ocean ridge system are its elevated position, extensive (extensional)faulting, and numerous volcanic structures.

Correct Answer
verified

What sedimentation rates typify the red or brown clays of the abyssal plains?

Correct Answer
verified

Submarine, basaltic lava flows chill quickly to form tube shaped protuberances called ________.

Correct Answer
verified

Exam 11: The Ocean Floor

The Atlantic and Pacific basins have oceanic ridges; the Indian Ocean has no oceanic ridge.

Correct AnswerverifiedShow Answer

Name two features more likely to be characteristic of active margins.

Correct Answerverifiedtrenches a...View AnswerShow Answer

________ and ________ comprise most biogenous sediments.

Correct AnswerverifiedCaCO3; SiO2 f...View AnswerShow Answer

On average, the continental shelf is about ________ kilometres wide and ________ metres deep.

Correct AnswerverifiedShow Answer

________ are steep sided valleys that cut across the continental slope and may extend across the continental rise into the deep ocean basin.

Correct AnswerverifiedShow Answer

Seafloor hot springs occur mainly in oceanic, abyssal plains.

Correct AnswerverifiedShow Answer

A low lying, coral limestone island with a central lagoon is called an ________.

Correct AnswerverifiedShow Answer

________ are the regions where basalt is the most abundant substrate exposed on the seabed.

Correct AnswerverifiedShow Answer

Why are the East Pacific Rise, the Gorda and Juan de Fuca Ridges all the way at the eastern side of the Pacific Ocean?

Correct AnswerverifiedShow Answer

The most predominant characteristics of the mid-ocean ridge system are its elevated position, extensive (extensional)faulting, and numerous volcanic structures.

Correct AnswerverifiedShow Answer

What sedimentation rates typify the red or brown clays of the abyssal plains?

Correct AnswerverifiedShow Answer

Submarine, basaltic lava flows chill quickly to form tube shaped protuberances called ________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
trenches a...
View Answer

and comprise most biogenous sediments.

Correct Answer
verified
CaCO₃; SiO₂f...
View Answer

On average, the continental shelf is about kilometres wide and metres deep.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified