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WorksheetsEstuaries and Oceans
Total questions: 20
Worksheet time: 10mins
This estuary is known as the largest estuary in NC.
Neuse Wetlands
Pamlico Sound
Roanoke Delta
Chowan Basin
The vertical zones in the ocean are characterized by which of the following?
how much sunlight or not is present in each
the amount of fish found in each
the amount of salt found in each
the presence of bioindicators found in each
Which will most likely result if there is increased upwelling in a coastal area?
more aquatic life
fewer nitrates
less nutrients in the water
higher water temperatures
Bioluminescence is the ability of an organism to produce their own
atoms
matter
light
offspring
Eutrophication causes which of the following?
more varieties of plants
more varieties of fish
colder water temperatures
extreme algae growth
Estuaries have what is described as "brackish" water. This is used to describe the content of the water. What does "brackish" mean in this sense?
salt and freshwater mix
complete saltwater
complete freshwater
mostly groundwater
Which is a factor that can explain why only 5% of the ocean has been discovered?
because the ocean is too shallow to study
because the ocean gets too salty to study
because of the temperature and the pressure of the deep ocean
because of the pollution found in the ocean
Which horizontal zone is represented mostly by the shore of the ocean?
the oceanic zone
the neritic zone
the intertidal zone
the twilight zone
Which of the following represents a role of an estuary? Mark all that apply.
they serve as environmental filters
they circulate nutrients
they serve as nurseries (habitats) for many aquatic organisms
all of these are correct
Which two plant sources are the most abundant in the ocean?
seaweed & grass
flowers & trees
phytoplankton & algae
sea stars & clams
Which zone of the ocean allows the organisms that live in it to use photosynthesis as a main source of energy?
twilight zone
abyssal zone
midnight zone
sunlight zone
Bioluminescence is a trait used by _____
organisms that live in the sunlight zone
organisms that only live on land
organisms that do not have access to the sun
organisms that can live in both water and on land
Which correctly describes the temperature changes in the vertical zones?
temperatures go from warm to extremely cold
temperatures go from cold to freezing
temperatures go from below 0 to extremely hot
temperatures remain warm in each zone
Disphotic refers to a zone that receives very little light. Which of the following zones is disphotic?
twilight zone
abyssal zone
midnight zone
sunlight zone
When nutrients in estuaries accumulate faster than they are removed, what can potentially occur?
an increase in the population of fish
eutrophication
an increase in the population of people who live nearby
an increase in plant life
Organisms that live on the ocean floor are known as
pelagic
benthos
photic
whales
The process where cool water and nutrients rises to the top and warm water sinks is known as ....
eutrophication
conservation
stewardship
upwelling
How can upwelling benefit fisherman?
it helps bring fish and other aquatic organisms to the surface
it gives them more of a challenge to catch fish
it helps them create boundaries with sharks and other predators
it helps them float their boats
Organisms that live near hydrothermal vents are referred to as .....
extremophiles because they can withstand high temp and pressure
pelagic because they never touch the ocean floor
immortal because how do they not die!!!???
Which of the following tools is used to study the ocean floor?
satellite imaging
topography
ships
submarines
