Question 1

What causes a decrease in oxygen levels beyond the sunlit layer?

Accepted Answer

A)  The respiration from marine animals and bacteria 
B)  The by-products of photosynthesis 
C)  There are fewer animals present 
D)  Decreased saturation because of cooler water 
A)  The respiration from marine animals and bacteria 
B)  The by-products of photosynthesis 
C)  There are fewer animals present 
D)  Decreased saturation because of cooler water

Question 2

The pH scale is the logarithmic measure of hydrogen ion concentrations.

Accepted Answer

A) True 
 B)False

Question 3

Why does oil not dissolve in water?

Accepted Answer

A)  It has covalent bonds connecting the atoms. 
B)  It is found within tissues of organisms. 
C)  It is not a polar molecule. 
D)  It has ionic bonds. 
A)  It has covalent bonds connecting the atoms. 
B)  It is found within tissues of organisms. 
C)  It is not a polar molecule. 
D)  It has ionic bonds.

Question 4

Why are some tropical waters unable to sustain life?

Accepted Answer

A)  There is an addition of pollutants in many of these areas. 
B)  There is a low level of dissolved oxygen due to temperature. 
C)  There is a greater amount of carbon dioxide. 
D)  There are more conservative components in these waters. 
A)  There is an addition of pollutants in many of these areas. 
B)  There is a low level of dissolved oxygen due to temperature. 
C)  There is a greater amount of carbon dioxide. 
D)  There are more conservative components in these waters.

Question 5

What is diffusion?

Accepted Answer

A)  The rate at which solute molecules present in a solution is equal to the rate they are being dissolved 
B)  The reforming of crystals 
C)  The amount of substances tied to biological cycles 
D)  The random movement of materials through a solution 
A)  The rate at which solute molecules present in a solution is equal to the rate they are being dissolved 
B)  The reforming of crystals 
C)  The amount of substances tied to biological cycles 
D)  The random movement of materials through a solution

Question 6

What affects the residence time of an element?

Accepted Answer

A)  Its saturation level 
B)  Its chemical equilibrium in water 
C)  Its chemical activity in water 
D)  The principle of constant proportions 
A)  Its saturation level 
B)  Its chemical equilibrium in water 
C)  Its chemical activity in water 
D)  The principle of constant proportions

Question 7

What enhances the ocean's buffering capacity?

Accepted Answer

A)  The amount of dissolved inorganic carbon present 
B)  The amount of acid already present in the ocean 
C)  The amount of dissolved organic compounds 
D)  The amount of calcium 
A)  The amount of dissolved inorganic carbon present 
B)  The amount of acid already present in the ocean 
C)  The amount of dissolved organic compounds 
D)  The amount of calcium

Question 8

What is the source of most of the dissolved materials found in the ocean?

Accepted Answer

A)  Outgassing 
B)  Convection currents 
C)  Dissolving and weathering of crustal rocks 
D)  Biological activities 
A)  Outgassing 
B)  Convection currents 
C)  Dissolving and weathering of crustal rocks 
D)  Biological activities

Question 9

Salt as a compound does not truly exist in the ocean.

Accepted Answer

A) True 
 B)False

Question 10

How is the ocean a reservoir for carbon? How is the carbon dioxide able to re-enter oceanic and atmospheric cycles?

Accepted Answer

The answer of How is the ocean a reservoir for...

Question 11

What is the colligative property of osmotic pressure?

Accepted Answer

A)  The pressure exerted on biological membranes from the atmosphere 
B)  The pressure exerted on biological membranes from salinity differences outside the cells 
C)  The pressure exerted on biological membranes during temperature changes of water 
D)  The pressure exerted on biological membranes when surrounding waters phase change 
A)  The pressure exerted on biological membranes from the atmosphere 
B)  The pressure exerted on biological membranes from salinity differences outside the cells 
C)  The pressure exerted on biological membranes during temperature changes of water 
D)  The pressure exerted on biological membranes when surrounding waters phase change

Question 12

At any given pH carbon dioxide and the ions it disassociates into when in water are in equilibrium.

Accepted Answer

A) True 
 B)False

Question 13

What is the average pH of the ocean?

Accepted Answer

A)  7.0 
B)  7.5 
C)  8.0 
D)  8.5 
A)  7.0 
B)  7.5 
C)  8.0 
D)  8.5

Question 14

How do ions alter the properties of seawater in comparison to freshwater properties?

Accepted Answer

The answer of How do ions alter the properties of...

Question 15

What is Forchhammer's principle? Give examples of the evidence which allowed Georg Forchhammer to develop this principle. How do residence times provide a foundation for this principle?

Accepted Answer

The answer of What is Forchhammer's principle? Give examples of...

Question 16

There is a hundred times the amount of gaseous oxygen in the atmosphere than there is dissolved oxygen in the ocean.

Accepted Answer

A) True 
 B)False

Question 17

Rapid amounts of photosynthesis can create variations in the alkalinity of seawater.

Accepted Answer

A) True 
 B)False

Question 18

What does carbon dioxide break down into once it is in the ocean?

Accepted Answer

A)  Carbonic acid 
B)  Bicarbonate 
C)  Carbonate 
D)  All of these choices 
A)  Carbonic acid 
B)  Bicarbonate 
C)  Carbonate 
D)  All of these choices

Question 19

The Ocean is becoming more acidic as it absorbs additional _________from the atmosphere.

Accepted Answer

A)  carbon dioxide 
B)  ozone 
C)  oxygen 
D)  pollution 
A)  carbon dioxide 
B)  ozone 
C)  oxygen 
D)  pollution

Question 20

What is a solute?

Accepted Answer

A)  A substance, usually a liquid, which dissolves other substances 
B)  A substance that dissolves into another substance 
C)  A mixture of two or more substances 
D)  A polar molecule 
A)  A substance, usually a liquid, which dissolves other substances 
B)  A substance that dissolves into another substance 
C)  A mixture of two or more substances 
D)  A polar molecule

What causes a decrease in oxygen levels beyond the sunlit layer?

The pH scale is the logarithmic measure of hydrogen ion concentrations.

Why does oil not dissolve in water?

Why are some tropical waters unable to sustain life?

What is diffusion?

What affects the residence time of an element?

What enhances the ocean's buffering capacity?

What is the source of most of the dissolved materials found in the ocean?

Salt as a compound does not truly exist in the ocean.

How is the ocean a reservoir for carbon? How is the carbon dioxide able to re-enter oceanic and atmospheric cycles?

What is the colligative property of osmotic pressure?

At any given pH carbon dioxide and the ions it disassociates into when in water are in equilibrium.

What is the average pH of the ocean?

How do ions alter the properties of seawater in comparison to freshwater properties?

What is Forchhammer's principle? Give examples of the evidence which allowed Georg Forchhammer to develop this principle. How do residence times provide a foundation for this principle?

There is a hundred times the amount of gaseous oxygen in the atmosphere than there is dissolved oxygen in the ocean.

Rapid amounts of photosynthesis can create variations in the alkalinity of seawater.

What does carbon dioxide break down into once it is in the ocean?

The Ocean is becoming more acidic as it absorbs additional _________from the atmosphere.

What is a solute?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water and Ocean Structure

Circulation of the Atmosphere

Circulation of the Ocean

Waves

Tides

Coasts

Life in the Ocean

Plankton, Algae, and Plants

Marine Animals

Marine Communities

Marine Resources

The Ocean and the Environment

Filters

Exam 7: Ocean Chemistry

What causes a decrease in oxygen levels beyond the sunlit layer?

The pH scale is the logarithmic measure of hydrogen ion concentrations.

Why does oil not dissolve in water?

Why are some tropical waters unable to sustain life?

What is diffusion?

What affects the residence time of an element?

What enhances the ocean's buffering capacity?

What is the source of most of the dissolved materials found in the ocean?

Salt as a compound does not truly exist in the ocean.

How is the ocean a reservoir for carbon? How is the carbon dioxide able to re-enter oceanic and atmospheric cycles?

What is the colligative property of osmotic pressure?

At any given pH carbon dioxide and the ions it disassociates into when in water are in equilibrium.

What is the average pH of the ocean?

How do ions alter the properties of seawater in comparison to freshwater properties?

What is Forchhammer's principle? Give examples of the evidence which allowed Georg Forchhammer to develop this principle. How do residence times provide a foundation for this principle?

There is a hundred times the amount of gaseous oxygen in the atmosphere than there is dissolved oxygen in the ocean.

Rapid amounts of photosynthesis can create variations in the alkalinity of seawater.

What does carbon dioxide break down into once it is in the ocean?

The Ocean is becoming more acidic as it absorbs additional _________from the atmosphere.

What is a solute?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water and Ocean Structure

Circulation of the Atmosphere

Circulation of the Ocean

Waves

Tides

Coasts

Life in the Ocean

Plankton, Algae, and Plants

Marine Animals

Marine Communities

Marine Resources

The Ocean and the Environment

Filters