Floods Quiz Question with Answer

41. In alpine regions reservoirs are created

  1. to regulate the flow of melting water from icefields
  2. to give the alpine populations enough water
  3. to make larger rivers smaller
  4. to get enough water into the main rivers

42. What causes most flash flooding?

  1. Tornadoes
  2. Slow-moving thunderstorms, thunderstorms repeatedly moving over the same area, or heavy rains from hurricanes and tropical storms.
  3. Hailstorms

43. Usually the largest floods in a stream occur

  1. very frequently, several times in one year
  2. frequently, every few years
  3. rarely, about every ten years
  4. rarely, or once every few 100 years

44. The largest floods in prehistoric times were probably the result of

  1. very heavy rainfall
  2. hurricanes
  3. ice dam failures
  4. meteorite impacts

45. When forests are cut or burned down

  1. water can flow away very quickly and cause mudslides
  2. nutrients are washed deep into the soil
  3. water stands in fields and cannot flow away
  4. rainfall can get into the ground more quickly

46. Which of the following statements is false?

  1. weather forecasts for a small region are more accurate than those for a large region
  2. weather forecasts are more accurate in Melbourne than in Darwin
  3. forecasts of temperature are more accurate than forecasts of rainfall
  4. all of the above

47. Which of the following can reduce the risk of flooding?

  1. zonings and building regulations for new developments
  2. dams, detention basins and levees
  3. flood awareness and education programs
  4. all of the above.

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