Multiple choice

Which of the following natural calamities is distinguished from a regular flood by a timescale of less than six hours?

  1. Coastal flooding

  2. Tropical cyclone

  3. Flash flood

  4. Freshet

  5. Tsunami
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm, or water melted from ice or snow flowing over ice sheets or snowfields. Flash floods are distinguished from a regular flood by a timescale of less than six hours.

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