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WorksheetsUnit 2: Estuaries Review
Total questions: 35
Worksheet time: 1hrs 10mins
Where is the largest estuary in the 48 contiguous United States?
Great Lakes
Gulf of Mexico
Chesapeake Bay
off the coast of Florida
When salt and fresh water mix, what is the new water substance called?
Brackish Acid
Fresh Water
Salt Water
Brackish Water
True or False:
Estuaries are the most productive Ecosystem/Biomes in the world
False
True
Bay, lagoon, harbor, inlet, and sound are other names for
wetlands
lakes
bogs
estuaries
The most common type of estuaries were formed when:
Sea levels rose at the end of the last Ice Age
A massive storm eroded the coastline causing saltwater intrusion
a large meteor struck the Earth
early civilizations began to build dams
Salinity in an estuary can fluctuate drastically. However, when moving UPSTREAM salinity will always ____________.
increase
decrease
stay the same
Where would you find greater salinity in an estuary?
on the surface of the water
near the bottom
somewhere in the middle
Here in the U.S. estuaries are nurseries to over ____ % of all fish and shellfish harvested.
99
10
75
100
What does the National Estuary Program do?
Works to restore and maintain the water quality and ecological integrity of estuaries of national significance.
Regulate fishing in and around estuaries located in the United States.
Provide meals for homeless people who live near estuaries.
There is no National Estuary Program!
Are salinity levels in estuaries higher or lower than the open ocean?
Higher
Lower
The same
What are some plants you might find in an estuary?
What are some animals you might find in an estuary?
all of these could be found in an estuary
Mobile Bay is part of the National Estuary Program.
True
False
What does it mean to be sustainable?
The ability to be maintained at a certain rate or level
Avoidance of the depletion of natural resources in order to maintain an ecological balance
The process can be maintained at a certain level for as long as wanted
All of these are correct
What makes it difficult to realize the goal of sustainability?
Environmentally damaging practices are often rewarded financially
Politicians and governments sometimes can't and/or won't implement effective policies
Poor communication results in a lack of community involvement in the policy process
All of these share the blame
What are "the commons"?
a natural resource available to all members of soceity
an area of a building where everyone gets together to watch football
student lounge
your parents checking account
Estuaries serve as important natural buffers, protecting upland areas from:
erosion and storm surge
saltwater intrusion
raw sewage spills
alien invasions
Estuaries have more __________ than any place in the ocean.
salt
dissolved oxygen
organic matter
polar bears
Select a bivalve you might find in an estuary that acts as a filter feeder.
oyster
gold fish
swedish fish
coral
Identify the estuary:
Which of the following are alternative names for estuaries?
Bays
Lagoons
sounds
all of the above
What is shown in the image above
Chemosynthesis
Photosynthesis
Upwelling
Osmosis
Kelp, Seaweed, Phytoplankton and algae do what to oceans.
Provided food for crabs
use chemicals to make energy called chemosynthesis
are heterotrophs that make their own food using sunlight
Are autotrophs that make their own food during photosynthesis
Cold salt water and hot salt water were added to the cup. Which layer represents the cold salt water?
The bottom blue layer
The top red layer
Neither
Room temperature fresh water and hot fresh water have been added to the cup. Which layer represents the room temperature fresh water?
The top red layer
The bottom blue layer
Neither
During your experiment with fresh, salty, hot, and cold water which did you find have the greater impact on density?
Temperature (hot/cold)
Salinity (fresh/salty)
Inconclusive
What two factors determine the density of water in deep currents?
Salinity and temperature
Coriolis Effect and wind
Upwelling and dissolved solids
Continental deflection and convection
Deep ocean currents are caused by differences in density of the water. Which statement accurately describes the relationships between salinity, temperature, and density of ocean water?
Cold water, holding less salt, sinks towards the bottom of the ocean.
Warm water, holding more salt, sinks towards the bottom of the ocean.
Warm water, holding less salt, rises toward the surface of the ocean.
Warm water, holding more salt, rises towards the surface of the ocean.
What is the name of the warm ocean current that creates a mild climate for the Gulf Coast?
California Current
Gulf Stream Current
East Australian Current
Peru Current
What provides the energy for hurricanes to be sustained?
warm water
cold air masses
wind from Austrailia
cold water
How do you think you will do on the Unit 2 Exam?
I'm going to ace it
I should do ok
I think I will at least pass it
I'm definitely going to fail it
