River Ecosystem Lecture 9: Hydrosphere and Lithosphere
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Questions and Answers

What is a river basin?

  • The portion of land drained by a river and its tributaries (correct)
  • A large waterfall in a river
  • The point where a river meets the ocean
  • The area surrounding a river that is heavily forested

    • What does a river basin eventually drain into?

  • Lake
  • Estuary (correct)
  • Waterfall
  • Ocean

    • What is the role of a river basin?

  • To form waterfalls in the river
  • To collect all the water falling on the surrounding land and channel it into the river (correct)
  • To prevent erosion along the river banks
  • To create a habitat for aquatic plants and animals

    • What does a river basin encompass?

    <p>All the land drained by many streams and creeks flowing downhill into one another</p> Signup and view all the answers

    Where does a river basin send all the water falling on the surrounding land?

    <p>Into the river, then to the lake, and eventually the estuary before the ocean</p> Signup and view all the answers

    What is the final destination of a river basin's water?

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

    What does a river do in relation to the creeks, streams, valleys, hills, lakes, and underground springs in a river basin?

    <p>Connects them together</p> Signup and view all the answers

    What is the main difference between a river basin and a watershed?

    <p>A river basin drains to a large river while a watershed drains to a smaller stream or lake</p> Signup and view all the answers

    What is the definition of a watershed?

    <p>The area of land that catches rain and snow and drains or seeps into a water body</p> Signup and view all the answers

    What is the term used to describe the movement of water through the rock layer towards the river channel?

    <p>Groundwater flow</p> Signup and view all the answers

    What is evapotranspiration?

    <p>The loss of moisture directly from water surfaces such as rivers and lakes</p> Signup and view all the answers

    What does drainage density indicate?

    <p>The risk of flooding in a river basin</p> Signup and view all the answers

    What is interception in relation to water flow?

    <p>'Interrupt' the flow of water through evapotranspiration</p> Signup and view all the answers

    What is throughflow in relation to water movement?

    <p>The movement of water through the soil towards the river channel</p> Signup and view all the answers

    What does a confluence refer to in terms of rivers?

    <p>The point where two rivers meet</p> Signup and view all the answers

    What is an isolated island similar to in terms of meeting the definition of an ecosystem?

    <p>It shares characteristics with a river basin.</p> Signup and view all the answers

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