Oceanography exam 4 iClickers

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New day! Which U.S. region lies within the tropical climate zone?

A. Pacific Northwest

B. New England

C. Hawaii and South Florida

D. Northern Alaska

C. Hawaii and South Florida

Within the U.S. Exclusive Economic Zone (EEZ), the United States has the exclusive right to:

A. Build military bases on any island

B. Explore and exploit marine resources such as fish, oil, and minerals

C. restrict all foreign ships form passage

D. Control air traffic over the EEZ

B. Explore and exploit marine resources such as fish, oil, and minerals

Which is a factor that determines the location of a coast?

A. Distribution of sediments

B. Erosion of land

C. Uplift and subsidence

D. Wave energy

E. Global tectonic activity

E. Global tectonic activity

What are lava coasts primarily composed of?

A. Sand and sediments

B. Igneous rock from volcanic eruptions

C. Coral reefs

D. Seashells

B. Igneous rock from volcanic eruptions

Drowned river valleys (like Chesapeake Bay) formed when:

A. Rising sea level flooded former river valleys

B. Glaciers advanced across the landscape

C. Rivers eroded deeper channels during the Ica Age

D. Tectonic uplift blocked drainage

A. Rising sea level flooded former river valleys

Glacial isostatic rebound occurs when:

A. Land sinks under new sediment

B. The crust rises after being depressed by thick ice

C. Sea level falls due to cooling

D. Glaciers advance across the coast

B. The crust rises after being depressed by thick ice

During the last Ice Age, much of northern North America was covered by:

A. The Alpine Ice Sheet

B. The Greenland Ice Sheet

C. The Laurentide Ice Sheet

D. The Arctic Ice Sheet

C. The Laurentide Ice Sheet

Mangrove forests protect inland areas by:

A. Amplifying wave energy

B. Acting as natural buffers that reduce storm surge

C. Increasing salinity in nearby rivers

D. Preventing coral growth

B. Acting as natural buffers that reduce storm surge

End class - Both coral reefs and mangroves are examples of:

A. Non-living coastal landforms

B. Human-built shoreline protection systems

C. Biological systems that build and modify coasts

D. Deep-sea habitat unrelated to coasts

C. Biological systems that build and modify coasts

New class! What is a heterotroph?

A. An organism that creates its own food

B. An organism that consumes food from other organisms

C. An organism that conducts chemosynthesis

D. An organism that conducts photosynthesis

E. An organism that is a primary producer

B. An organism that consumes food from other organisms

What does a food web illustrate?

A. Trophic relationships

B. Primary production

C. a net filled with food

D. Heterotroph consumption

E. Autotroph consumption

A. Trophic relationships

Phytoplankton are primarily classifies as what type of organism?

A. heterotroph

B. organotroph

C. photoeterotroph

D. autotroph

E. chemoheterotroph

D. autotroph

What is a frustule?

A. The rigid cell wall of a coccolithophore

B. The rigid cell wall of a diatom

C. A microscopic phage that attacks diatoms

D. A small appendage on a dinoflagellate

E. The photosynthetic center of cyanobacteria

B. The rigid cell wall of a diatom

Which characteristic distinguishes most dinoflagellates from diatoms and coccolithophores?

A. Frustule

B. Auxospore

C. Flagella

D. Cilia

E. Coccoliths

C. Flagella

During times of high productivity which plankton are notable for making the surface water appear milky or chalky?

A. coccolithophores

B. dinoflagellates

C. zooplankton

D. cyanobacteria

E. diatoms

A. coccolithophores

What are the potential limiting factors for primary productivity?

A. Light and nutrients

B. Light and carbon dioxide

C. Nutrients and carbon dioxide

D. Carbon dioxide and water

E. Nutrients and water

A. Light and nutrients

End day - What is a major source of nitrate to coastal waters?

A. excretion

B. soil runoff

C. urea

D. nitrifying bacteria

E. atmospheric deposition

B. soil runoff