Question 1

The oceans are a major contributor of oxygen to the earth's atmosphere.

Accepted Answer

A) True 
 B)False  True

Question 2

Cold seawater holds less oxygen than warm seawater at the same pressure and salinity.

Accepted Answer

A) True 
 B)False  False

Question 3

Nutrients are nonconservative constituents of seawater because they ________.

Accepted Answer

A)  maintain constant ratios to each other 
B)  do not maintain constant ratios to each other 
C)  are recycled into plants and animals 
D)  maintain constant ratios to each other and are recycled into plants and animals 
E)  do not maintain constant ratios to each other and are recycled into plants and animals 
A)  maintain constant ratios to each other 
B)  do not maintain constant ratios to each other 
C)  are recycled into plants and animals 
D)  maintain constant ratios to each other and are recycled into plants and animals 
E)  do not maintain constant ratios to each other and are recycled into plants and animals E

Question 4

An ion with a negative charge is a cation.

Accepted Answer

A) True 
 B)False

Question 5

An average value for the salinity of seawater could be (pick the best choice).

Accepted Answer

A)  15 g/kg 
B)  20 g/kg 
C)  25 g/kg 
D)  30 g/kg 
E)  35 g/kg 
A)  15 g/kg 
B)  20 g/kg 
C)  25 g/kg 
D)  30 g/kg 
E)  35 g/kg

Question 6

The balance between photosynthesis and respiration in the open ocean's water column ________.

Accepted Answer

A)  changes with depth 
B)  favors photosynthesis for most of the euphotic zone 
C)  is affected by light availability 
D)  All of these are correct. 
E)  None of these is correct. 
A)  changes with depth 
B)  favors photosynthesis for most of the euphotic zone 
C)  is affected by light availability 
D)  All of these are correct. 
E)  None of these is correct.

Question 7

The major ions of seawater are those which ________.

Accepted Answer

A)  are used by living organisms to build their soft tissues 
B)  have residence times that are short relative to the mixing time of the oceans 
C)  do not vary from place to place in the oceans, except as salinity varies 
D)  None of these is correct 
E)  All of these are correct 
A)  are used by living organisms to build their soft tissues 
B)  have residence times that are short relative to the mixing time of the oceans 
C)  do not vary from place to place in the oceans, except as salinity varies 
D)  None of these is correct 
E)  All of these are correct

Question 8

Surface values of dissolved oxygen may exceed 100% saturation.

Accepted Answer

A) True 
 B)False

Question 9

Major ions constitute ________.

Accepted Answer

A)  100% of all ions in seawater 
B)  99.3% of all ions in seawater 
C)  95.3% of all ions in seawater 
D)  91.3% of all ions in seawater 
E)  50% of all ions in seawater 
A)  100% of all ions in seawater 
B)  99.3% of all ions in seawater 
C)  95.3% of all ions in seawater 
D)  91.3% of all ions in seawater 
E)  50% of all ions in seawater

Question 10

Carbon dioxide is added to seawater by ________.

Accepted Answer

A)  photosynthesis 
B)  respiration 
C)  decomposition 
D)  transfer from the atmosphere 
E)  respiration, decomposition and transfer from the atmosphere 
A)  photosynthesis 
B)  respiration 
C)  decomposition 
D)  transfer from the atmosphere 
E)  respiration, decomposition and transfer from the atmosphere

Question 11

Electrodialysis produces ________ from low-salinity seawater.

Accepted Answer

A)  bromine and magnesium 
B)  energy 
C)  fresh water 
D)  oxygen and carbon dioxide 
E)  table salt (sodium chloride) 
A)  bromine and magnesium 
B)  energy 
C)  fresh water 
D)  oxygen and carbon dioxide 
E)  table salt (sodium chloride)

Question 12

Ions are removed from seawater most effectively by ________.

Accepted Answer

A)  evaporation 
B)  freezing 
C)  adsorption 
D)  bacterial action 
E)  None of these is correct; one method is not more effective than another. 
A)  evaporation 
B)  freezing 
C)  adsorption 
D)  bacterial action 
E)  None of these is correct; one method is not more effective than another.

Question 13

An ion with a positive charge is known as a cation.

Accepted Answer

A) True 
 B)False

Question 14

Carbon dioxide in seawater keeps the water's pH ________.

Accepted Answer

A)  slightly alkaline 
B)  strongly alkaline 
C)  slightly acid 
D)  strongly acid 
E)  neutral 
A)  slightly alkaline 
B)  strongly alkaline 
C)  slightly acid 
D)  strongly acid 
E)  neutral

Question 15

Which of the following ions has the highest concentration in seawater?

Accepted Answer

A)  Na+ 
B)  Cl- 
C)  Mg2+ 
D)  K+ 
E)  Ca2+ 
A)  Na+ 
B)  Cl- 
C)  Mg2+ 
D)  K+ 
E)  Ca2+

Question 16

The relative molar abundance of carbon, nitrogen, and phosphorus in marine phytoplankton can be expressed in a relationship called the ________ ratio.

Accepted Answer

The answer of The relative molar abundance of carbon, nitrogen,...

Question 17

The proportions of the major salts in seawater are constantly changing.

Accepted Answer

A) True 
 B)False

Question 18

Which of these processes results in the transfer of the carbon from carbon dioxide to the deep sea?

Accepted Answer

A)  Photosynthesis 
B)  Respiration 
C)  Decay 
D)  Photosynthesis and decay 
E)  Photosynthesis, respiration, and decay 
A)  Photosynthesis 
B)  Respiration 
C)  Decay 
D)  Photosynthesis and decay 
E)  Photosynthesis, respiration, and decay

Question 19

More oxygen is found in surface waters at lower latitudes than in surface waters at polar latitudes.

Accepted Answer

A) True 
 B)False

Question 20

Check each of the following constituents of seawater that are conservative constituents.

Accepted Answer

A)  Sodium 
B)  Oxygen 
C)  Sulfate 
D)  Carbon dioxide 
E)  Phosphorus
F) Chloride 
A)  Sodium 
B)  Oxygen 
C)  Sulfate 
D)  Carbon dioxide 
E)  Phosphorus
F) Chloride

The oceans are a major contributor of oxygen to the earth's atmosphere.

Cold seawater holds less oxygen than warm seawater at the same pressure and salinity.

Nutrients are nonconservative constituents of seawater because they ________.

An ion with a negative charge is a cation.

An average value for the salinity of seawater could be (pick the best choice).

The balance between photosynthesis and respiration in the open ocean's water column ________.

The major ions of seawater are those which ________.

Surface values of dissolved oxygen may exceed 100% saturation.

Major ions constitute ________.

Carbon dioxide is added to seawater by ________.

Electrodialysis produces ________ from low-salinity seawater.

Ions are removed from seawater most effectively by ________.

An ion with a positive charge is known as a cation.

Carbon dioxide in seawater keeps the water's pH ________.

Which of the following ions has the highest concentration in seawater?

The relative molar abundance of carbon, nitrogen, and phosphorus in marine phytoplankton can be expressed in a relationship called the ________ ratio.

The proportions of the major salts in seawater are constantly changing.

Which of these processes results in the transfer of the carbon from carbon dioxide to the deep sea?

More oxygen is found in surface waters at lower latitudes than in surface waters at polar latitudes.

Check each of the following constituents of seawater that are conservative constituents.

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Productivity, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

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Exam 5: The Chemistry of Seawater

The oceans are a major contributor of oxygen to the earth's atmosphere.

Cold seawater holds less oxygen than warm seawater at the same pressure and salinity.

Nutrients are nonconservative constituents of seawater because they ________.

An ion with a negative charge is a cation.

An average value for the salinity of seawater could be (pick the best choice).

The balance between photosynthesis and respiration in the open ocean's water column ________.

The major ions of seawater are those which ________.

Surface values of dissolved oxygen may exceed 100% saturation.

Major ions constitute ________.

Carbon dioxide is added to seawater by ________.

Electrodialysis produces ________ from low-salinity seawater.

Ions are removed from seawater most effectively by ________.

An ion with a positive charge is known as a cation.

Carbon dioxide in seawater keeps the water's pH ________.

Which of the following ions has the highest concentration in seawater?

The relative molar abundance of carbon, nitrogen, and phosphorus in marine phytoplankton can be expressed in a relationship called the ________ ratio.

The proportions of the major salts in seawater are constantly changing.

Which of these processes results in the transfer of the carbon from carbon dioxide to the deep sea?

More oxygen is found in surface waters at lower latitudes than in surface waters at polar latitudes.

Check each of the following constituents of seawater that are conservative constituents.

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

The Atmosphere and the Oceans

Ocean Structure and Circulation

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Productivity, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Filters