Understanding Stream Valleys
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Questions and Answers

What characterizes a stream valley in the youth stage?

  • Broad floodplain and slow-moving water
  • Steep sides and no established floodplain (correct)
  • Wide stream formation and gentle hills
  • Smooth valley and U-shaped

    • During the maturity stage, what change occurs in the stream valley?

  • Erosion of valley sides instead of downward erosion (correct)
  • Narrowing of the valley
  • Formation of boulders, rapids, and waterfalls
  • Increase in stream velocity and gradient

    • What is a characteristic of a mature stream valley?

  • Presence of boulders, rapids, and waterfalls
  • Steep sides and interrupted stream flow
  • High flow gradient and rapid water movement
  • Sloping valley sides and a large floodplain (correct)

    • Why are stream valleys in the old age stage more susceptible to floods?

    <p>Lack of physical barriers and slow water flow</p> Signup and view all the answers

    What type of flow does a stream valley in the old age stage have?

    <p>Very wide formation over the floodplain</p> Signup and view all the answers

    What is the main factor that leads to the formation of a stream valley?

    <p>Erosion caused by the running water of a stream</p> Signup and view all the answers

    What is a floodplain in a stream valley?

    <p>The wide and level bottom of the valley</p> Signup and view all the answers

    During which stage of a stream valley's aging process is there vigorous and energetic water flow resulting in downward erosion?

    <p>Youth stage</p> Signup and view all the answers

    What causes most changes to the land around a stream?

    <p>Erosion</p> Signup and view all the answers

    What is an essential characteristic of a stream valley?

    <p>Floodplain at the wide and level bottom of the valley</p> Signup and view all the answers

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