Rivers

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1. What is 'lag time'?

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

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

  • Interception
  • Percolation
  • Infiltration
  • Throughfall

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

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

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

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

5. What type of flow occurs around the meanders of a river?

  • Reduced Flow
  • Turbulent Flow
  • Helicoidal Flow
  • Slow Flow

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