Geography Chapters

1. Continents and Oceans2. Biosphere3. Lithosphere4. Hydrosphere5. Atmosphere6. Latitudes and Longitudes7. Different Heat Zones of the Earth8. Longitudes and Time Zones9. International Date Line10. Motion of the Earth11. Effect of the Tilted Axis on Day and Night12. The Atmosphere (Composition and Layers)13. Weather and Climate14. Atmospheric Pressure15. Internal Structure of the Earth16. Rocks17. Earthquakes and Volcanoes18. Various Landforms (Mountains, Plateaus, Plains, Grasslands)19. Landforms Created by River System20. Landforms Created by Glacier21. Landforms Created by Wind22. Landforms Created by Groundwater23. The Indian Subcontinent Position, Extent, and Physical Features24. Climatic Diversity in the Indian Subcontinent25. Soil Resources of the Indian Subcontinent26. Agriculture in India27. Land Use Pattern of India28. Water Resources and Their Utilization in India29. Multipurpose River Valley Projects30. Transport in India31. Rivers of India

Landforms Created by Wind

“Wind shapes the Earth's surface through erosion, transportation, and deposition processes, especially in arid and semi-arid regions.”

Introduction

Wind is a powerful agent of erosion and deposition, particularly in dry areas with little vegetation. It erodes loose particles, transports them over long distances, and deposits them in new locations, forming various unique landforms.

Types of Wind Erosion

  • Deflation: Removal of loose, fine particles by wind, leaving behind larger rocks and a surface called a desert pavement.
  • Abrasion: Wind-driven sand particles act like sandpaper, wearing down rocks and surfaces.

Landforms Created by Wind Erosion

  • Yardangs: Streamlined, wind-sculpted ridges carved out of soft rock.
  • Pedestal Rocks: Rocks with narrow bases and wider tops, shaped by abrasion near the ground.
  • Ventifacts: Rocks with polished or faceted surfaces shaped by wind abrasion.

Landforms Created by Wind Deposition

  • Dunes: Mounds or ridges of sand deposited by wind. Types include crescent-shaped (barchan), linear, star, and parabolic dunes.
  • Loess Deposits: Fine silt and clay particles deposited over large areas, creating fertile soils.
  • Sand Sheets: Flat expanses of sand deposited by wind, often found between dunes.

Importance of Wind-Formed Landforms

  • Shape desert landscapes and influence desert ecology.
  • Provide habitats for specialized plants and animals.
  • Loess soils are highly fertile and support agriculture in some regions.
  • Help scientists study past climatic conditions.

Previous Year Questions

  • SSC CGL 2019: What is deflation in wind erosion?
  • The removal of fine particles by wind from the surface.
  • RRB JE 2018: Which of the following is a wind-deposited landform?
  • Dune
  • HSSC CET 2020: What are yardangs?
  • Streamlined ridges carved by wind erosion.
  • SSC MTS 2017: Which wind landform has a narrow base and a wider top?
  • Pedestal rock
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