Question 1

The term "salinity" refers to:

Accepted Answer

A)  the total amount of dissolved solids in the ocean. 
B)  the total amount of sodium chloride dissolved in the ocean. 
C)  the total amount of chlorine in one kilogram of water. 
D)  the total amount of chloride ion in the water. 
A)  the total amount of dissolved solids in the ocean. 
B)  the total amount of sodium chloride dissolved in the ocean. 
C)  the total amount of chlorine in one kilogram of water. 
D)  the total amount of chloride ion in the water. A

Question 2

The density of seawater is affected by both temperature and salinity.

Accepted Answer

A) True 
 B)False  True

Question 3

Oxygen enters seawater:

Accepted Answer

A)  through the respiration of animals. 
B)  as a byproduct of photosynthesis and diffusion from the surface. 
C)  as a result of decomposition of plant and animal remains. 
D)  through the oxidation of metal ions in seawater. 
A)  through the respiration of animals. 
B)  as a byproduct of photosynthesis and diffusion from the surface. 
C)  as a result of decomposition of plant and animal remains. 
D)  through the oxidation of metal ions in seawater. B

Question 4

If our planet were without its ocean, but otherwise the same as it is today, surface temperatures would be:

Accepted Answer

A)  more extreme. 
B)  less extreme. 
C)  about the same as we know today. 
D)  impossible to tell without more information. 
A)  more extreme. 
B)  less extreme. 
C)  about the same as we know today. 
D)  impossible to tell without more information.

Question 5

About what percentage of the incoming sunlight is absorbed by the Earth's land and water surface?

Accepted Answer

A)  20% 
B)  35% 
C)  50% 
D)  65% 
A)  20% 
B)  35% 
C)  50% 
D)  65%

Question 6

A zone in which the ocean's salinity changes rapidly with increasing depth is called:

Accepted Answer

A)  a halocline. 
B)  a thermocline. 
C)  a pycnocline. 
D)  a metacline. 
A)  a halocline. 
B)  a thermocline. 
C)  a pycnocline. 
D)  a metacline.

Question 7

The salinity of seawater can be calculated if the amount of chloride is known because the ratio of dissolved solids is constant.

Accepted Answer

A) True 
 B)False

Question 8

The ocean is stratified with respect to:

Accepted Answer

A)  density 
B)  temperature 
C)  salinity 
D)  all of these 
A)  density 
B)  temperature 
C)  salinity 
D)  all of these

Question 9

The density of seawater will increase:

Accepted Answer

A)  when the temperature increases. 
B)  when the salinity decreases. 
C)  when the salinity increases. 
D)  when dissolved gases increase. 
A)  when the temperature increases. 
B)  when the salinity decreases. 
C)  when the salinity increases. 
D)  when dissolved gases increase.

Question 10

Which of the following statements about pH is not true?

Accepted Answer

A)  The pH relates to acid-base balance. 
B)  A pH of 3 is alkaline, a pH of 10 is acid. 
C)  Buffers prevent large swings in pH. 
D)  As a whole, the pH of the ocean is mildly alkaline. . 
A)  The pH relates to acid-base balance. 
B)  A pH of 3 is alkaline, a pH of 10 is acid. 
C)  Buffers prevent large swings in pH. 
D)  As a whole, the pH of the ocean is mildly alkaline. .

Question 11

What is meant by the mixing time of the ocean?

Accepted Answer

The Ocean, as a vast body of water, is m

Question 12

Which of the following statements is TRUE regarding sound in the ocean?

Accepted Answer

A)  Sound is scattered as it bounces off suspended particles in the water. 
B)  Sound intensity increases as it moves through the ocean because of absorption. 
C)  The speed of sound in the ocean is ten times less than the speed of sound in air. 
D)  The speed of sound in the ocean decreases as temperature increases. 
A)  Sound is scattered as it bounces off suspended particles in the water. 
B)  Sound intensity increases as it moves through the ocean because of absorption. 
C)  The speed of sound in the ocean is ten times less than the speed of sound in air. 
D)  The speed of sound in the ocean decreases as temperature increases.

Question 13

As carbon dioxide enters the ocean it:

Accepted Answer

A)  is used by animals for respiration. 
B)  bonds to water molecules to increase the salinity of the ocean. 
C)  forms carbonic acid. 
D)  becomes a product of photosynthesis. 
A)  is used by animals for respiration. 
B)  bonds to water molecules to increase the salinity of the ocean. 
C)  forms carbonic acid. 
D)  becomes a product of photosynthesis.

Question 14

A permanent and deep thermocline can be found:

Accepted Answer

A)  in temperate zones. 
B)  in Antarctica. 
C)  in the tropics. 
D)  anywhere depending on water salinity. 
A)  in temperate zones. 
B)  in Antarctica. 
C)  in the tropics. 
D)  anywhere depending on water salinity.

Question 15

80 calories of heat are required to change 1 gram of ice to liquid water. This represents water's:

Accepted Answer

A)  latent heat of evaporation 
B)  latent heat of fusion 
C)  sensible heat 
D)  temperature 
A)  latent heat of evaporation 
B)  latent heat of fusion 
C)  sensible heat 
D)  temperature

Question 16

The principle of constant proportions states:

Accepted Answer

A)  that the total amount of dissolved solids in the ocean is a constant. 
B)  that the salinity of the ocean is a constant. 
C)  that the excess volatile ratio of the ocean is a constant. 
D)  that the ratio of major salts in samples of seawater from various places is a constant. 
A)  that the total amount of dissolved solids in the ocean is a constant. 
B)  that the salinity of the ocean is a constant. 
C)  that the excess volatile ratio of the ocean is a constant. 
D)  that the ratio of major salts in samples of seawater from various places is a constant.

Question 17

All of the following influence the depth to which light can penetrate the ocean EXCEPT:

Accepted Answer

A)  the dust, cloud cover, and gases in the atmosphere. 
B)  the depth of the water. 
C)  the smoothness or roughness of the sea surface. 
D)  the amount of suspended material in the water. 
A)  the dust, cloud cover, and gases in the atmosphere. 
B)  the depth of the water. 
C)  the smoothness or roughness of the sea surface. 
D)  the amount of suspended material in the water.

Question 18

What is the approximate mixing time of the world ocean?

Accepted Answer

A)  about 1,600 years 
B)  about 160,000 years 
C)  about 160,000,000 years 
D)  about 1 million years 
A)  about 1,600 years 
B)  about 160,000 years 
C)  about 160,000,000 years 
D)  about 1 million years

Question 19

The average salinity of the world ocean is about ____.

Accepted Answer

A)  35% 
B) 21.5% 
C) 3.5% 
D)  52% 
A)  35% 
B) 21.5% 
C) 3.5% 
D)  52%

Question 20

Describe the factors that affect the distance and the rate at which sound travels in the ocean. Would you expect sound to travel faster through warm or cold water? Shallow or deep? Why?

Accepted Answer

Sound is a form of energy transmitted by

The term "salinity" refers to:

The density of seawater is affected by both temperature and salinity.

Oxygen enters seawater:

If our planet were without its ocean, but otherwise the same as it is today, surface temperatures would be:

About what percentage of the incoming sunlight is absorbed by the Earth's land and water surface?

A zone in which the ocean's salinity changes rapidly with increasing depth is called:

The salinity of seawater can be calculated if the amount of chloride is known because the ratio of dissolved solids is constant.

The ocean is stratified with respect to:

The density of seawater will increase:

Which of the following statements about pH is not true?

What is meant by the mixing time of the ocean?

Which of the following statements is TRUE regarding sound in the ocean?

As carbon dioxide enters the ocean it:

A permanent and deep thermocline can be found:

80 calories of heat are required to change 1 gram of ice to liquid water. This represents water's:

The principle of constant proportions states:

All of the following influence the depth to which light can penetrate the ocean EXCEPT:

What is the approximate mixing time of the world ocean?

The average salinity of the world ocean is about ____.

Describe the factors that affect the distance and the rate at which sound travels in the ocean. Would you expect sound to travel faster through warm or cold water? Shallow or deep? Why?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

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 6: Water

The term "salinity" refers to:

The density of seawater is affected by both temperature and salinity.

Oxygen enters seawater:

If our planet were without its ocean, but otherwise the same as it is today, surface temperatures would be:

About what percentage of the incoming sunlight is absorbed by the Earth's land and water surface?

A zone in which the ocean's salinity changes rapidly with increasing depth is called:

The salinity of seawater can be calculated if the amount of chloride is known because the ratio of dissolved solids is constant.

The ocean is stratified with respect to:

The density of seawater will increase:

Which of the following statements about pH is not true?

What is meant by the mixing time of the ocean?

Which of the following statements is TRUE regarding sound in the ocean?

As carbon dioxide enters the ocean it:

A permanent and deep thermocline can be found:

80 calories of heat are required to change 1 gram of ice to liquid water. This represents water's:

The principle of constant proportions states:

All of the following influence the depth to which light can penetrate the ocean EXCEPT:

What is the approximate mixing time of the world ocean?

The average salinity of the world ocean is about ____.

Describe the factors that affect the distance and the rate at which sound travels in the ocean. Would you expect sound to travel faster through warm or cold water? Shallow or deep? Why?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Life in the Ocean

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

Filters