Estuary Ecosystem Quiz

What is an estuary?

• A deep ocean trench

• A lake with no connection to the sea

• A body of water open to the ocean

• A body of water with only fresh water

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Why are estuaries called the 'Nurseries of the Sea'?

• Because they provide a safe environment for fish and birds to raise their young

• Because they are the largest bodies of water

• Because they are home to the most phytoplankton

• Because they have the highest salt concentration

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What are producers in estuaries called?

• Kelp

• Seagrass

• Phytoplankton

• Zooplankton

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What is the function of estuaries in filtering sediment and pollutants?

• To increase pollution in the ocean

• To decrease the effects of flooding

• To provide food for wildlife

• To clean the water before it flows into the ocean

Which type of estuary is formed when sandbars partially cut off the waters behind them from the sea?

• Coastal plain estuaries

• Tectonic estuaries

• Bar-built estuaries

• Fjord estuaries

What is the geological feature of coastal plain estuaries?

• Formed from sinking land

• Valley-like with gentle sloping bottoms

• Straight and long

• Narrow with steep sides

Where are fjord estuaries found?

• In deep ocean trenches

• In the middle of deserts

• In tropical regions

• In areas covered by glaciers

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Which estuary type is created when the sea fills in a hole or basin formed from sinking land?

• Fjord estuaries

• Coastal plain estuaries

• Tectonic estuaries

• Bar-built estuaries

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What is the function of estuaries in buffering the ocean and the land?

• To provide a safe environment for wildlife

• To decrease the effects of storm surges

• To filter sediment and pollutants

• To increase the effects of flooding

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Why are estuaries important for the ecosystem?

• Because they are the largest bodies of water

• Because they provide a safe environment for wildlife to raise their young

• Because they have the highest salt concentration

• Because they are home to the most phytoplankton