Question 1

The pycnocline is a rapid change in _______ with depth in the ocean.

Accepted Answer

A)  salinity 
B)  density 
C)  temperature 
D)  biomass 
A)  salinity 
B)  density 
C)  temperature 
D)  biomass

Question 2

Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so.   Why is it so easy for the sunbather to stay afloat?

Accepted Answer

A)  The thermocline is right near the surface and the temperature differential near her helps her to float. 
B)  The low water density in this region helps buoyancy. 
C)  The high biological activity produces gases to buoy her. 
D)  The high salinity in that body of water buoys her. 
A)  The thermocline is right near the surface and the temperature differential near her helps her to float. 
B)  The low water density in this region helps buoyancy. 
C)  The high biological activity produces gases to buoy her. 
D)  The high salinity in that body of water buoys her.

Question 3

Why is productivity low in tropical regions?

Accepted Answer

A)  because the low density of the water makes it hard for plankton to float near the surface 
B)  because there is too much sunlight 
C)  because the deep waters are too warm to maintain a healthy biomass 
D)  because the thermocline acts as a barrier to the mixing of surface and deep waters 
E)  All of the above are problems. 
A)  because the low density of the water makes it hard for plankton to float near the surface 
B)  because there is too much sunlight 
C)  because the deep waters are too warm to maintain a healthy biomass 
D)  because the thermocline acts as a barrier to the mixing of surface and deep waters 
E)  All of the above are problems.

Question 4

The open ocean, regardless of depth, where animals swim or float freely is called the_______  zone.

Accepted Answer

A)  pelagic zone 
B)  oceanic zone 
C)  intertidal zone 
D)  photic zone 
A)  pelagic zone 
B)  oceanic zone 
C)  intertidal zone 
D)  photic zone

Question 5

Productivity in the oceans is highest in_______  regions.

Accepted Answer

A)  equatorial 
B)  middle latitude 
C)  polar 
D)  aphotic 
A)  equatorial 
B)  middle latitude 
C)  polar 
D)  aphotic

Question 6

Large Blue whales that are up to 30 meters long live primarily on _______ that is/are only about 6 cm long.

Accepted Answer

A)  lobsters 
B)  fish 
C)  krill 
D)  squid 
A)  lobsters 
B)  fish 
C)  krill 
D)  squid

Question 7

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Accepted Answer

A)  plankton 
B)  neritic 
C)  benthos 
D)  nekton 
A)  plankton 
B)  neritic 
C)  benthos 
D)  nekton

Question 8

Density in seawater is determined by_______  .

Accepted Answer

A)  salinity 
B)  temperature 
C)  both temperature and salinity 
D)  none of these 
A)  salinity 
B)  temperature 
C)  both temperature and salinity 
D)  none of these

Question 9

_______ refers to the mass of all living organisms on Earth.

Accepted Answer

A)  Food web 
B)  Biomass 
C)  Benthos 
D)  Trophic level 
A)  Food web 
B)  Biomass 
C)  Benthos 
D)  Trophic level

Question 10

_______ include all organisms that drift with ocean currents.

Accepted Answer

A)  Nekton 
B)  Nerithos 
C)  Plankton 
D)  Benthos 
A)  Nekton 
B)  Nerithos 
C)  Plankton 
D)  Benthos

Question 11

Organisms, such as algae and bacteria, that drift with ocean currents are known as_______  .

Accepted Answer

A)  nekton 
B)  benthos organisms 
C)  biomass 
D)  plankton 
E)  none of these 
A)  nekton 
B)  benthos organisms 
C)  biomass 
D)  plankton 
E)  none of these

Question 12

_______ organisms live on or in the ocean bottom.

Accepted Answer

A)  Scavenging 
B)  Benthonic 
C)  Planktonic 
D)  Nektonic 
E)  none of these 
A)  Scavenging 
B)  Benthonic 
C)  Planktonic 
D)  Nektonic 
E)  none of these

Question 13

Salinity refers to _______  .

Accepted Answer

A)  ocean thermal gradient 
B)  amount of sea life 
C)  salt content 
D)  all solid dissolved minerals 
A)  ocean thermal gradient 
B)  amount of sea life 
C)  salt content 
D)  all solid dissolved minerals

Question 14

Feeding stages in the food chain are known as _______ levels.

Accepted Answer

A)  pelagic 
B)  photic 
C)  trophic 
D)  epipelagic 
A)  pelagic 
B)  photic 
C)  trophic 
D)  epipelagic

The pycnocline is a rapid change in _______ with depth in the ocean.

Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so. Why is it so easy for the sunbather to stay afloat?

Why is productivity low in tropical regions?

The open ocean, regardless of depth, where animals swim or float freely is called the_______ zone.

Productivity in the oceans is highest in_______ regions.

Large Blue whales that are up to 30 meters long live primarily on _______ that is/are only about 6 cm long.

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Density in seawater is determined by_______ .

_______ refers to the mass of all living organisms on Earth.

_______ include all organisms that drift with ocean currents.

Organisms, such as algae and bacteria, that drift with ocean currents are known as_______ .

_______ organisms live on or in the ocean bottom.

Salinity refers to _______ .

Feeding stages in the food chain are known as _______ levels.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Weathering, Soil, and Mass Movement

Running Water and Groundwater

Glaciers, Deserts, and Wind

Geologic Time

Earths Evolution Through Geologic Time

The Ocean Floor

The Dynamic Ocean

The Atmosphere: Composition, Structure, and Temperature

Moisture, Clouds, and Precipitation

Air Pressure and Wind

Weather Patterns and Severe Storms

World Climates and Global Climate Change

Origins of Modern Astronomy

Touring Our Solar System

Light, Telescopes, and the Sun

Beyond Our Solar System

Filters

Exam 14: Ocean Water and Ocean Life

The pycnocline is a rapid change in _______ with depth in the ocean.

Consider the below image of a bather easily floating in the Dead Sea, exerting no effort to do so. Why is it so easy for the sunbather to stay afloat?

Why is productivity low in tropical regions?

The open ocean, regardless of depth, where animals swim or float freely is called the_______ zone.

Productivity in the oceans is highest in_______ regions.

Large Blue whales that are up to 30 meters long live primarily on _______ that is/are only about 6 cm long.

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Density in seawater is determined by_______ .

_______ refers to the mass of all living organisms on Earth.

_______ include all organisms that drift with ocean currents.

Organisms, such as algae and bacteria, that drift with ocean currents are known as_______ .

_______ organisms live on or in the ocean bottom.

Salinity refers to _______ .

Feeding stages in the food chain are known as _______ levels.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Weathering, Soil, and Mass Movement

Running Water and Groundwater

Glaciers, Deserts, and Wind

Geologic Time

Earths Evolution Through Geologic Time

The Ocean Floor

The Dynamic Ocean

The Atmosphere: Composition, Structure, and Temperature

Moisture, Clouds, and Precipitation

Air Pressure and Wind

Weather Patterns and Severe Storms

World Climates and Global Climate Change

Origins of Modern Astronomy

Touring Our Solar System

Light, Telescopes, and the Sun

Beyond Our Solar System

Filters