Understanding Stream Valleys
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What is the main factor that helps in the formation of stream valleys?

  • Erosion caused by running water (correct)
  • The presence of trees along the stream
  • Movement of water in the opposite direction
  • Deposition of broken-down rock or soil

    • What characterizes a floodplain in a stream valley?

  • Deep valley walls
  • Wide and level bottom area (correct)
  • Slope at the bottom of the valley
  • Presence of trees along the stream banks

    • Which stage in the aging process of a stream valley has a steep gradient to the land and vigorous water flow?

  • Old age stage
  • Maturity stage
  • Decline stage
  • Youth stage (correct)

    • What happens when a stream erodes enough land to form a stream valley?

    <p>A depression in the earth is created</p> Signup and view all the answers

    Why are floodplains important in stream valleys?

    <p>To designate areas for potential flooding</p> Signup and view all the answers

    What is the major mechanism that causes changes to the land around running water sources?

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

    What characteristic defines a stream valley?

    <p>Floodplain at the lowest point</p> Signup and view all the answers

    What characterizes stream valleys in the youth stage?

    <p>V-shaped with steep sides and interrupted stream flow</p> Signup and view all the answers

    What happens to the valley in the maturity stage of a stream valley?

    <p>Valley gets wider and more U-shaped</p> Signup and view all the answers

    What characterizes a mature stream valley?

    <p>Sloping sides, large floodplain, slow-moving water</p> Signup and view all the answers

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

    <p>Low flow gradient and lack of physical barriers</p> Signup and view all the answers

    What happens to the stream flow in a mature stream valley compared to a youth stage valley?

    <p>Becomes slower and gentler</p> Signup and view all the answers

    Which characteristic is not typical of a youth stage stream valley?

    <p>Wide floodplain</p> Signup and view all the answers

    In which stage does a stream valley begin to erode the sides instead of downward?

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

    What leads to the formation of a large floodplain in a mature stream valley?

    <p>Stream carrying large sediment load</p> Signup and view all the answers

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