Rivers and Ecosystems Quiz

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Questions and Answers

What is the term for the area where freshwater from a river mixes with salty seawater?

  • Estuary (correct)
  • Delta
  • Gorge
  • Floodplain

Which structure helps prevent flooding by acting as an embankment along a river?

  • Meander
  • Mouth
  • Levee (correct)
  • Tributary

What is formed by sediment deposits at the mouth of a river?

  • Confluence
  • Delta (correct)
  • Riverbank
  • Channel

Which of the following terms describes a U-shaped lake formed when a river meander is cut off?

<p>Oxbow Lake (C)</p> Signup and view all the answers

What is known as the place where two rivers converge?

<p>Confluence (A)</p> Signup and view all the answers

What defines the high land that separates two river basins?

<p>Interfluve (C)</p> Signup and view all the answers

Which term refers to the bottom of a river where the water flows?

<p>Riverbed (A)</p> Signup and view all the answers

What type of ecosystem is characterized by organisms living on or in the riverbed?

<p>Benthic Ecosystem (B)</p> Signup and view all the answers

Which feature is formed from sediment deposits at the mouth of a river?

<p>Delta (B)</p> Signup and view all the answers

What defines the 'watershed' in relation to a river system?

<p>The area where all water drains into a single river system (A)</p> Signup and view all the answers

What characterizes a meander in a river?

<p>A curve or bend in the river's path (A)</p> Signup and view all the answers

What is the purpose of a levee in relation to rivers?

<p>To prevent flooding (A)</p> Signup and view all the answers

Which component of a river ecosystem is specifically characterized by the presence of bacteria?

<p>Microbial Ecosystem (B)</p> Signup and view all the answers

What type of landscape feature results from river erosion over time?

<p>Gorge (B)</p> Signup and view all the answers

Which term is used for a smaller river that flows into a larger river?

<p>Tributary (D)</p> Signup and view all the answers

Flashcards

Source

The beginning of a river, usually found in mountains or highlands.

Tributary

A smaller river or stream that joins a larger river.

Meander

A curve or bend in a river's path, often in the middle course.

Floodplain

Flat land around a river that may flood during heavy rains.

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Delta

Landform created by sediment deposits at a river's mouth.

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Estuary

Area where freshwater from the river mixes with salty seawater.

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Oxbow Lake

A U-shaped lake formed when a river's meander is cut off.

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Levee

An embankment along a river that prevents flooding.

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Channel

The path that a river flows through.

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Riverbank

The land along the sides of a river.

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Riverbed

The bottom of the river where water flows.

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Confluence

The point where two rivers meet.

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Watershed (Drainage Basin)

The area of land that drains into a single river system.

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Gorge

A deep, narrow valley formed by river erosion over time.

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Distributary

A smaller river that branches off from the main river.

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Plunge Pool

A deep pool at the base of a waterfall, created by falling water.

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