Estuaries Quiz

Why are estuaries important to our environment?

• Estuaries filter pollutants and prevent erosion.

• Estuaries provide nurseries for marine life.

• Estuaries act as home for many types of wildlife.

• All of the above.

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True or False:

Estuaries are one of the most productive Ecosystems/Biomes in the world.

• False

• True

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An estuary is best defined as a place where--

• fresh and salt water meet

• a river meets the Chesapeake Bay

• a group of animals are gathered

• the water from the land flows into a river

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the amount of salt dissolved in water is

• pH

• salinity

• solution

• miscibility

Bay, lagoon, harbor, inlet, and sound are other names for

• wetlands

• lakes

• bogs

• estuaries

Which best explains why inhabitants of an estuary must adapt to frequent environmental changes?

• Estuaries receive little sunlight.

• The water temperature is constantly warm.

• The salinity of the water is constantly changing.

• Low levels of oxygen are absorbed by the water.

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Which best explains why estuaries are an important habitat for many marine organisms in comparison to the open ocean?

• There is less food in estuaries.

• There are more predators in estuaries.

• There is more salt available in estuaries.

• There are more nutrients available in estuaries.

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Which best describes the water found in estuaries?

• brackish

• salt water

• freshwater

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How does over-harvesting of oysters impact the water quality of an estuary?

• increase in pollution usually filtered by oysters

• decrease in CO2 levels due to increase in pollution

• decrease in organic matter usually filtered by oysters

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Which best describes the types of organisms found in estuaries?

• They can survive in salt water.

• They cannot tolerate brackish water.

• They are only found in freshwater.

• They tolerate both freshwater and salt water.

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