GCE Geography 1990 Question 20

Question 20

Wind and Desert Landforms

Rock pedestals are most likely to be found in

  1. A.regions where river erosion has taken place
  2. B.arid areas where wind abrasion has modified rocks of differing resistance
  3. C.regions where wave hydraulic action has taken place
  4. D.arid area where wind deflation has scooped out the earth surface
  5. E.regions where a river has deposited a large load of sediments
Show the answer and explanation

Answer: B (arid areas where wind abrasion has modified rocks of differing resistance)

Explanation

Sand-laden wind wears away the softer base of a rock faster, leaving a mushroom-shaped pedestal.