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When cool air flows from a high mountain region to a low mountain region, the air will

Question and options

When cool air flows from a high mountain region to a low mountain region, the air will
  1. undergo adiabatic warming
  2. increase in moisture content
  3. undergo adiabatic cooling
  4. condense, forming large amount of dew

Answer and explanation

Correct answer: A - undergo adiabatic warming
Air descending from higher to lower altitude is compressed by rising pressure and warms adiabatically (as in foehn/chinook winds); its relative humidity falls rather than producing condensation.

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