Wind erosion is most effective in arid and semi-arid areas where there is little moisture or vegetation to bind the soil particles. Wind works to erode materials in two ways: deflation, where it blows particles away; and abrasion, where particles are rubbed together and against bedrock. This erosion can form various landforms such as longitudinal and transverse dunes, as well as deposits of loess soil.

1. Wind GeographyStandard: VIII

2. Created by,M.Kohila, M.A. M.Phil., B.A.(Eng),B.Ed.,B.A.(His)S.M.R.V.H.S.S.,VADASERY,NAGERCOIL,KANYAKUMARI DISTRICT,TAMILNADU,INDIA

3. LEARNING OBJECTIVESKnows that wind is relatively insignificant erosional agent. Learns about the causes for sand storms and dust storms.Undersands the formation of sand dunes.

4. Content

5. WindAir that moves across the earth’s surface is called wind.

6. Wind erosionWind erosion is effective in arid and semiarid areas.

7. In humid places moisture bind particles together and vegetation anchor the soil .

8. So wind erosion is negligible.

9. For, wind to be effective ,dryness and scandyvegeation are prerequisites.

10. Wind may pick up, transport, and deposit.Works of windWind works in two ways to erode the materials. They are a. By deflation and 2. by abrationBlow outBy deflation - By Abration - Ventifactsபுடைத்தெடுத்தல் - ஊதுபள்ளங்கள்உராய்ந்துதேய்த்தல்-பட்டைக்கற்கள்

11. Bed LoadsSand StormDust stormBarchan dune

13. Longitudinal duneTransverse duneLoess

14. Loess and yellow river in ChinaDesert in central Asia