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Geography Ch2 Lithosphere – II Exogenetic Processes — Social Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9Social ScienceGeography Ch2 Lithosphere – II Exogenetic Processes2 Marks
Question
Mention the various features formed by wind erosion.
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Answer

Some of the erosional landforms of wind are
  • Mushroom rocks
  1. When a rock’s bottom is soft, the sand-laden winds blow against it and wear it down.
  2. By the constant wearing down action of the wind, the bottom gets eroded away to form a mushroom like structure.
  • Inselbergs:
  1. Certain hard rocks like igneous rocks are more resistant to wind action.
  2. Such isolated residual hills rising abrupt by from their surroundings are turned as inselbergs.
  • Yardangs:
  1. In arid regions certain rocks have hard and soft layers arranged vertically.
  2. When winds blow over these rocks, the soft layers get eroded leaving irregular crests. These are called yardangs.

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