How do flash floods differ from river ...

[Metfan725]

How do flash floods differ from river floods?

Question 2

A mirage is caused by ____.
 A) scattering of light by air molecules
  B) the bending of light by air of different densities
  C) a thin layer of moist air near the ground
  D) reflection of light from a hot surface

[johnpizzaz]

Answer to Question 1

Flash floods are floods that develop rapidly with little or no advance warning and often result when a thunderstorm stalls or moves very slowly, causing heavy rainfall over a relatively small area. River floods can result if thunderstorms bring repeated heavy rain to a region for days or weeks. These occur when a major river system rises slowly but floods a large area, whereas a flash flood may devastate a smaller area in minutes to hours.

Answer to Question 2

B