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WAEC Geography 1996 Question 18

Question 18

Wind and Desert Landforms

Yardangs are best described as

  1. A.long narrow ridges of sand lying parallel to the direction of the prevailing winds
  2. B.steep-sided vertical bands of alternate hard and soft rocks aligned in the direction of the prevailing winds
  3. C.flat, table-like masses with very resistant horizontal top layers and very steep sides
  4. D.tabular, horizontal strata of alternate hard and soft rocks sculptured into a ridge and furrow landscape by wind
  5. E.hills of sand formed by the accumulation of sand and shaped by the movement of winds
Show the answer and explanation

Answer: B (steep-sided vertical bands of alternate hard and soft rocks aligned in the direction of the prevailing winds)

Explanation

Yardangs are ridges of hard rock left between grooves cut in softer rock where vertical bands lie along the wind direction.