Question 1

The white cliffs of Dover are chalk-like deposits of coccolithophores and are around 100 million years old.

Accepted Answer

A) True 
 B)False  True

Question 2

Stratigraphy is the study of the deposition and layering of sediments over time.

Accepted Answer

A) True 
 B)False  True

Question 3

Which of the following is a major source of terrigenous sediments?

Accepted Answer

A)  Erosion. 
B)  Dissolved organic material. 
C)  Dissolved nutrients. 
D)  Precipitation over the open ocean. 
A)  Erosion. 
B)  Dissolved organic material. 
C)  Dissolved nutrients. 
D)  Precipitation over the open ocean. A

Question 4

All of the following are valid methods for classifying sediments EXCEPT:

Accepted Answer

A)  the size and settling rate of sediment grains. 
B)  the thickness of sediment layers. 
C)  the source material of the sediment. 
D)  the location on the sea floor where the sediment accumulates. 
A)  the size and settling rate of sediment grains. 
B)  the thickness of sediment layers. 
C)  the source material of the sediment. 
D)  the location on the sea floor where the sediment accumulates.

Question 5

The age of most marine sediments is:

Accepted Answer

A)  no older than about 10,000 years old. 
B)  about 1 million years old. 
C)  rarely older than about 180 million years old. 
D)  not possible to determine. 
A)  no older than about 10,000 years old. 
B)  about 1 million years old. 
C)  rarely older than about 180 million years old. 
D)  not possible to determine.

Question 6

In the process of lithification, sediments:

Accepted Answer

A)  are subducted into the mantle at a deep trench. 
B)  are converted into solid rock. 
C)  slip into the center of the mid-ocean ridges and become new seafloor. 
D)  are uplifted to form the edges of continents. 
A)  are subducted into the mantle at a deep trench. 
B)  are converted into solid rock. 
C)  slip into the center of the mid-ocean ridges and become new seafloor. 
D)  are uplifted to form the edges of continents.

Question 7

Which of the following is of organic origin; i.e., made by organisms?

Accepted Answer

A)  terrigenous sediments 
B)  biogenous sediments 
C)  hydrogenous (or authigenic) sediments 
D)  cosmogenous sediments. 
A)  terrigenous sediments 
B)  biogenous sediments 
C)  hydrogenous (or authigenic) sediments 
D)  cosmogenous sediments.

Question 8

One area in the ocean that has an extreme abundance of sediment deposition is:

Accepted Answer

A)  the shallow waters around Alaska. 
B)  the waters around the tip of Africa. 
C)  the deep ocean floor in the middle of the Pacific Ocean. 
D)  the waters near the Gulf Coast of North America. 
A)  the shallow waters around Alaska. 
B)  the waters around the tip of Africa. 
C)  the deep ocean floor in the middle of the Pacific Ocean. 
D)  the waters near the Gulf Coast of North America.

Question 9

Which of the following is generated in place, on the spot where we find them?

Accepted Answer

A)  terrigenous sediments 
B)  biogenous sediments 
C)  hydrogenous (or authigenic) sediments 
D)  cosmogenous sediments 
A)  terrigenous sediments 
B)  biogenous sediments 
C)  hydrogenous (or authigenic) sediments 
D)  cosmogenous sediments

Question 10

Which of the following are hydrogenous sediments?

Accepted Answer

A)  quartz sand 
B)  evaporites 
C)  siliceous oozes 
D)  tektites 
A)  quartz sand 
B)  evaporites 
C)  siliceous oozes 
D)  tektites

Question 11

What are the main sources of terrigenous sediments?

Accepted Answer

Terrigenous sediments are those sediment

Question 12

Which statement characterizes sediments of the North Pacific?

Accepted Answer

A)  The sediments of the North Pacific are primarily composed of radiolarian deposits. 
B)  The sediments of the North Pacific are thicker than the sediments of the Atlantic. 
C)  The sediments of the deep North Pacific are mainly pelagic clays. 
D)  The sediments of the North Pacific are mostly calcareous oozes. 
A)  The sediments of the North Pacific are primarily composed of radiolarian deposits. 
B)  The sediments of the North Pacific are thicker than the sediments of the Atlantic. 
C)  The sediments of the deep North Pacific are mainly pelagic clays. 
D)  The sediments of the North Pacific are mostly calcareous oozes.

Question 13

Describe neritic sediments and explain what you would expect the composition of a typical neritic sample to be.

Accepted Answer

Neritic sediments are those that form an

Question 14

Sediments that originate in the ocean are called:

Accepted Answer

A)  pelagic sediments. 
B)  abyssal sediments. 
C)  biogenous sediments. 
D)  neritic sediments. 
A)  pelagic sediments. 
B)  abyssal sediments. 
C)  biogenous sediments. 
D)  neritic sediments.

Question 15

What is the origin of manganese nodules?

Accepted Answer

Manganese nodules are hydrogenous sedime

Question 16

Scientists use ocean sediments to obtain information about ocean processes throughout the history of the ocean.

Accepted Answer

A) True 
 B)False

Question 17

Sediment refers to the inorganic materials that accumulate on the ocean floor.

Accepted Answer

A) True 
 B)False

Question 18

Clays are the coarsest and most easily transported of the terrigenous sediments.

Accepted Answer

A) True 
 B)False

Question 19

A layer of sediment that contains a mixture of sediments with various sizes is referred to as:

Accepted Answer

A)  homogeneous. 
B)  poorly sorted. 
C)  well-sorted. 
D)  eroding sediments. 
A)  homogeneous. 
B)  poorly sorted. 
C)  well-sorted. 
D)  eroding sediments.

Question 20

Neritic sediments are found on the:

Accepted Answer

A)  deep ocean floor mostly in the Atlantic Ocean. 
B)  continental shelf. 
C)  continental rise. 
D)  abyssal plains. 
A)  deep ocean floor mostly in the Atlantic Ocean. 
B)  continental shelf. 
C)  continental rise. 
D)  abyssal plains.

The white cliffs of Dover are chalk-like deposits of coccolithophores and are around 100 million years old.

Stratigraphy is the study of the deposition and layering of sediments over time.

Which of the following is a major source of terrigenous sediments?

All of the following are valid methods for classifying sediments EXCEPT:

The age of most marine sediments is:

In the process of lithification, sediments:

Which of the following is of organic origin; i.e., made by organisms?

One area in the ocean that has an extreme abundance of sediment deposition is:

Which of the following is generated in place, on the spot where we find them?

Which of the following are hydrogenous sediments?

What are the main sources of terrigenous sediments?

Which statement characterizes sediments of the North Pacific?

Describe neritic sediments and explain what you would expect the composition of a typical neritic sample to be.

Sediments that originate in the ocean are called:

What is the origin of manganese nodules?

Scientists use ocean sediments to obtain information about ocean processes throughout the history of the ocean.

Sediment refers to the inorganic materials that accumulate on the ocean floor.

Clays are the coarsest and most easily transported of the terrigenous sediments.

A layer of sediment that contains a mixture of sediments with various sizes is referred to as:

Neritic sediments are found on the:

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Life in the Ocean

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

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Exam 5: Ocean Sediments

The white cliffs of Dover are chalk-like deposits of coccolithophores and are around 100 million years old.

Stratigraphy is the study of the deposition and layering of sediments over time.

Which of the following is a major source of terrigenous sediments?

All of the following are valid methods for classifying sediments EXCEPT:

The age of most marine sediments is:

In the process of lithification, sediments:

Which of the following is of organic origin; i.e., made by organisms?

One area in the ocean that has an extreme abundance of sediment deposition is:

Which of the following is generated in place, on the spot where we find them?

Which of the following are hydrogenous sediments?

What are the main sources of terrigenous sediments?

Which statement characterizes sediments of the North Pacific?

Describe neritic sediments and explain what you would expect the composition of a typical neritic sample to be.

Sediments that originate in the ocean are called:

What is the origin of manganese nodules?

Scientists use ocean sediments to obtain information about ocean processes throughout the history of the ocean.

Sediment refers to the inorganic materials that accumulate on the ocean floor.

Clays are the coarsest and most easily transported of the terrigenous sediments.

A layer of sediment that contains a mixture of sediments with various sizes is referred to as:

Neritic sediments are found on the:

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Life in the Ocean

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

Filters