Estuary Quiz Questions And Answers

10 Questions | By Stori S. Jacobs | Last updated: Jun 20, 2022 | Total Attempts: 3887

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Here we have come up with an estuary quiz for you to test your knowledge. This quiz is designed to educate people about estuaries and, above all, allow exploration of a very important environment. For some basic understanding and to educate yourself on the subject, the quiz is very good. So, let us see how well you understand this and how much you score. We wish the best of luck to you!

Questions and Answers

1.

Estuaries have also been called:
- A.
  
  Bays
- B.
  
  Lagoons
- C.
  
  Sounds
- D.
  
  Sloughs
- E.
  
  All of the Above
2.

Why are estuaries important to our environment?
- A.
  
  They provide homes for many species of wildlife.
- B.
  
  They are important nursery areas for a variety of marine life.
- C.
  
  They help to filter pollutants from the water.
- D.
  
  All of the above
- E.
  
  A and B
3.

The high productivity of estuaries has been attributed to the presence of several primary production units. Which of the following would NOT be considered a primary production unit in an estuary ecosystem?
- A.
  
  Phytoplankton suspended within the sunlight zone of the water column.
- B.
  
  Benthic algae and microscopic plants that live on the sediment surface wherever sunlight reaches the bottom.
- C.
  
  Macroflora, such as marsh grasses which are the foundation of many food webs and provide nursery grounds for most coastal shellfish and finfish.
- D.
  
  Juvenile zooplankton brought to the estuary by tides after hatching offshore.
- E.
  
  B and D
4.

Water is brought to an estuary from a variety of sources. Which of the following is responsible for increasing the salinity in the estuary?
- A.
  
  Rivers
- B.
  
  Streams
- C.
  
  Urban runoff
- D.
  
  Tides
- E.
  
  All of the above
5.

Many shorebirds feed on the mudflats of estuaries. When would be the best time for the birds to catch stranded fish and invertebrates?
- A.
  
  During tidal ebb
- B.
  
  During tidal flow
- C.
  
  A and B
- D.
  
  Birds don't eat mud
- E.
  
  All of the above
6.

Water in most estuaries is brackish because of the mixing of freshwater from rivers and saltwater from incoming tides. A drought in the bay watershed would most likely cause the water in the bay to…
- A.
  
  Increase in salinity
- B.
  
  Decrease in salinity
- C.
  
  Stay the same
- D.
  
  Rise
- E.
  
  A ,B, and C
7.

What is an estuary?
- A.
  
  The land area that drains water into a lake, river, or pond.
- B.
  
  The area where a river meets the ocean, where fresh and saltwater mix.
- C.
  
  The large body of saltwater that covers most of the earth's surface.
- D.
  
  The underground system that provides drinking water to an area.
8.

What percent of the ocean is salinity?
- A.
  
  3.5
- B.
  
  10.5
- C.
  
  50
- D.
  
  70
9.

The place where two oceans meet is also called an estuary.
- A.
  
  True
- B.
  
  False
10.

Lawrence River is the largest estuary.
- A.
  
  True
- B.
  
  False