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WAEC Geography 2023 Question 26

Question 26

Wind and Desert Landforms

Barchan dunes move

  1. A.in the same direction as the prevailing winds.
  2. B.against the prevailing winds.
  3. C.at right angle to the prevailing wind.
  4. D.in a circular direction.
Show the answer and explanation

Answer: A (in the same direction as the prevailing winds.)

Explanation

Wind pushes sand up the gentle windward slope and over the crest, so the whole barchan creeps forward in the direction the wind blows, with its horns pointing downwind.