Question 1

Most of the floor of the North Pacific Ocean is covered with ____.

Accepted Answer

A) manganese nodules 
B) glacial-marine sediments 
C) pelagic clay 
D) evaporites 
A) manganese nodules 
B) glacial-marine sediments 
C) pelagic clay 
D) evaporites C

Question 2

What are the main sources of terrigenous sediments?

Accepted Answer

Terrigenous sediments are those sediments that have their origins on land and are typically the most common and abundant sediment type on the ocean floor, especially in neritic deposits. There are several sources of terrigenous sediments. First, rivers transport huge amounts of sediments into the ocean and river runoff is the primary source of terrigenous sediments. Scientists predict that 15 billion metric tons of terrigenous sediment is transported by rivers to the ocean each year. Secondly, winds blow dust, sand and volcanic ash into the ocean. It is estimated that about 100 million tons of dust, sand and ash blow into the ocean each year.

Question 3

More than 75% of the total ocean floor is considered ____.

Accepted Answer

A) continental shelf 
B) deep ocean floor 
C) continental slope 
D) continental rise 
A) continental shelf 
B) deep ocean floor 
C) continental slope 
D) continental rise B

Question 4

Which particles are the finest in size?

Accepted Answer

A) sand 
B) silt 
C) clay 
D) granules 
A) sand 
B) silt 
C) clay 
D) granules

Question 5

Aside from manganese, what is the other primary component of manganese nodules?

Accepted Answer

A) iron oxide 
B) uranium 
C) silver 
D) gold 
A) iron oxide 
B) uranium 
C) silver 
D) gold

Question 6

Carbonate sediments are rare in deep sea sediments because the ____.

Accepted Answer

A) organisms providing shells do not live in the deep sea 
B) abundance of muds and clays cover the carbonate shells 
C) carbonate shells are dissolved in deep water 
D) organisms do not live beyond the edge of the continental shelf 
A) organisms providing shells do not live in the deep sea 
B) abundance of muds and clays cover the carbonate shells 
C) carbonate shells are dissolved in deep water 
D) organisms do not live beyond the edge of the continental shelf

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Large volumes of bottom sediments may be transported long distances by ____.

Accepted Answer

A) storm waves 
B) icebergs 
C) tidal action. 
D) turbidity currents 
A) storm waves 
B) icebergs 
C) tidal action. 
D) turbidity currents

Question 9

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

Accepted Answer

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

Question 10

The analysis of layered sedimentary deposits in the ocean is known as ____.

Accepted Answer

A) stratigraphy 
B) oceanography 
C) marine biology 
D) ecology 
A) stratigraphy 
B) oceanography 
C) marine biology 
D) ecology

Question 11

Radiolarians and diatoms are both examples of ____.

Accepted Answer

A) organisms that are only found in tropical parts of the ocean 
B) single-celled animals 
C) creatures whose shells form siliceous oozes 
D) calcareous oozes in the deepest parts of the ocean 
A) organisms that are only found in tropical parts of the ocean 
B) single-celled animals 
C) creatures whose shells form siliceous oozes 
D) calcareous oozes in the deepest parts of the ocean

Question 12

The only way in which calcium carbonate sediment can form is by evaporation.

Accepted Answer

A) True 
 B)False

Question 13

What is sediment and what are the four classifications of marine sediments based on their origin?

Accepted Answer

Sediment is a general term referring to

Question 14

The depth in the ocean where the rate at which calcareous sediments are supplied to the seabed equals the rate at which those sediments dissolve. What is this depth called?

Accepted Answer

A) calcium carbonate compensation depth 
B) calcium dissolution depth 
C) calcium carbonate pressure point 
D) carbonate equalization depth 
A) calcium carbonate compensation depth 
B) calcium dissolution depth 
C) calcium carbonate pressure point 
D) carbonate equalization depth

Question 15

Over millions of years, natural gas and oil can be formed from ____.

Accepted Answer

A) erosion 
B) volcanic ash 
C) biogenous sediments 
D) terrigenous sediments 
A) erosion 
B) volcanic ash 
C) biogenous sediments 
D) terrigenous sediments

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Which sediments arrive in the ocean from continents via wind and water?

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 18

The oozes on the seafloor mostly consist of ____.

Accepted Answer

A) boulders and cobbles from glaciers oozing off the land 
B) bones and teeth of bottom-dwelling fishes 
C) fine muds washed down the continental slope to the seafloor 
D) microscopic hard parts of single-celled living organisms 
A) boulders and cobbles from glaciers oozing off the land 
B) bones and teeth of bottom-dwelling fishes 
C) fine muds washed down the continental slope to the seafloor 
D) microscopic hard parts of single-celled living organisms

Question 19

Which type of sediment 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 20

The study of the ocean's past is referred to as ____.

Accepted Answer

A) stratigraphy 
B) geology 
C) paleogeochemistry 
D) paleoceanography 
A) stratigraphy 
B) geology 
C) paleogeochemistry 
D) paleoceanography

Most of the floor of the North Pacific Ocean is covered with ____.

What are the main sources of terrigenous sediments?

More than 75% of the total ocean floor is considered ____.

Which particles are the finest in size?

Aside from manganese, what is the other primary component of manganese nodules?

Carbonate sediments are rare in deep sea sediments because the ____.

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

Large volumes of bottom sediments may be transported long distances by ____.

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

The analysis of layered sedimentary deposits in the ocean is known as ____.

Radiolarians and diatoms are both examples of ____.

The only way in which calcium carbonate sediment can form is by evaporation.

What is sediment and what are the four classifications of marine sediments based on their origin?

The depth in the ocean where the rate at which calcareous sediments are supplied to the seabed equals the rate at which those sediments dissolve. What is this depth called?

Over millions of years, natural gas and oil can be formed from ____.

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

Which sediments arrive in the ocean from continents via wind and water?

The oozes on the seafloor mostly consist of ____.

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

The study of the ocean's past is referred to as ____.

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

Exam 5: Ocean Sediments

Most of the floor of the North Pacific Ocean is covered with ____.

What are the main sources of terrigenous sediments?

More than 75% of the total ocean floor is considered ____.

Which particles are the finest in size?

Aside from manganese, what is the other primary component of manganese nodules?

Carbonate sediments are rare in deep sea sediments because the ____.

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

Large volumes of bottom sediments may be transported long distances by ____.

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

The analysis of layered sedimentary deposits in the ocean is known as ____.

Radiolarians and diatoms are both examples of ____.

The only way in which calcium carbonate sediment can form is by evaporation.

What is sediment and what are the four classifications of marine sediments based on their origin?

The depth in the ocean where the rate at which calcareous sediments are supplied to the seabed equals the rate at which those sediments dissolve. What is this depth called?

Over millions of years, natural gas and oil can be formed from ____.

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

Which sediments arrive in the ocean from continents via wind and water?

The oozes on the seafloor mostly consist of ____.

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

The study of the ocean's past is referred to as ____.

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