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WAEC Geography 2007 Question 28

Question 28

Weather

A fog is most likely to develop when a

  1. A.cold dry wind blows over a cold current
  2. B.warm moist wind blows over a cold current
  3. C.cold dry wind blows over a warm current
  4. D.warm moist wind blows over a warm current.
Show the answer and explanation

Answer: B (warm moist wind blows over a cold current)

Explanation

Warm moist air is chilled to dew point over cold water, so its vapour condenses as fog.