Rivers

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1. What is 'lag time'?

  • The time between peak rainfall & peak discharge
  • The time from when rainfall starts to when it ends
  • The time taken for the discharge to go back to base flow level
  • Difference between the rising limb and the falling limb
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Other questions in this quiz

2. The vertical movement of water through rocks due to gravity is what...?

  • Throughfall
  • Percolation
  • Interception
  • Infiltration

3. Which of these is a negative social impact of the 3 Gorges Dam?

  • Increased likelihood of landslides
  • Costed £25 billion
  • 1.2 Million people resettled
  • Amount of sediment deposited fell by over 50%

4. The bouncing movement of rocks along the river bed is known as what?

  • Suspension
  • Saltation
  • Traction
  • Solution

5. Which of these are the correct equation for the 'Hydraulic Radius'?

  • Discharge / Precipitation
  • Cross sectional area / Wetted perimeter
  • Kinetic Energy / Cross sectional area
  • Wetter Perimeter / Cross sectional area

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