River Ecosystem Lecture 9: Hydrosphere and Lithosphere
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Questions and Answers

What is the definition of a river basin?

  • The area where a river meets the ocean
  • The portion of land drained by a river and its tributaries (correct)
  • The point where a river splits into smaller streams
  • The part of a river with the fastest flow

What does a river basin encompass?

  • The point where water flows into the ocean
  • Only the water within the river
  • Only the main river
  • All the land surface drained by many streams and creeks (correct)

What is the final destination of the water in a river basin?

  • Waterfall
  • Estuary (correct)
  • Ocean
  • Lake

What does a river basin eventually send its water to before reaching the ocean?

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

What is the main function of a river?

<p>To connect different parts of a river basin (A)</p> Signup and view all the answers

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

<p>A river basin includes all the water that drains to a large river, while a watershed refers to a smaller area draining to a smaller stream (D)</p> Signup and view all the answers

What is the function of evapotranspiration in the water cycle?

<p>To lose moisture directly from water surfaces or vegetation (C)</p> Signup and view all the answers

What does drainage density indicate in a drainage basin?

<p>The length of all rivers in a drainage basin divided by the area of the drainage basin (B)</p> Signup and view all the answers

What is the source of a river?

<p>Where a river starts (B)</p> Signup and view all the answers

What is meant by interception in the context of water flow?

<p>'Interrupting' the flow of water to the ground by trees and other plants (D)</p> Signup and view all the answers

What does throughflow represent in the movement of water?

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

What does groundwater flow refer to in the context of a river basin?

<p>The movement of water through the rock layer towards the river channel (C)</p> Signup and view all the answers

What is the function of surface runoff in a river basin?

<p>Water flowing directly overland to the river (overland flow) (C)</p> Signup and view all the answers

What is meant by tributary in relation to a river?

<p>A smaller stream/river which flows into a larger one (D)</p> Signup and view all the answers

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