Wind <br />Geography<br />Standard: VIII<br />
Created by,<br />M.Kohila, M.A. M.Phil., B.A.(Eng),B.Ed.,B.A.(His)<br />S.M.R.V.H.S.S.,<br />VADASERY,<br />NAGERCOIL,<br ...
LEARNING OBJECTIVES<br />Knows that wind is relatively insignificant erosional agent.<br /> Learns about the causes for sa...
Content<br />
Wind<br />Air that moves across the earth’s surface  is called wind.<br />
Wind erosion<br /><ul><li>Wind erosion is effective in arid and semiarid areas.
In humid places moisture bind particles together and vegetation anchor the soil .
 So wind erosion is negligible.
For, wind to be effective ,dryness and scandyvegeation are prerequisites.
Wind may pick up, transport, and deposit.</li></li></ul><li>Works of wind<br />Wind works in two ways to erode the materia...
Bed Loads<br />Sand Storm<br />Dust storm<br />Barchan dune<br />
Longitudinal dune<br />Transverse dune<br />Loess<br />
Loess and yellow river in China<br />Desert in central Asia<br />
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Wind

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Wind , Wind erosion, Wind transportation, Wind deposition

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Transcript of "Wind"

  1. 1. Wind <br />Geography<br />Standard: VIII<br />
  2. 2. Created by,<br />M.Kohila, M.A. M.Phil., B.A.(Eng),B.Ed.,B.A.(His)<br />S.M.R.V.H.S.S.,<br />VADASERY,<br />NAGERCOIL,<br />KANYAKUMARI DISTRICT,<br />TAMILNADU,<br />INDIA<br />
  3. 3. LEARNING OBJECTIVES<br />Knows that wind is relatively insignificant erosional agent.<br /> Learns about the causes for sand storms and dust storms.<br />Undersands the formation of sand dunes.<br />
  4. 4. Content<br />
  5. 5. Wind<br />Air that moves across the earth’s surface is called wind.<br />
  6. 6. Wind erosion<br /><ul><li>Wind erosion is effective in arid and semiarid areas.
  7. 7. In humid places moisture bind particles together and vegetation anchor the soil .
  8. 8. So wind erosion is negligible.
  9. 9. For, wind to be effective ,dryness and scandyvegeation are prerequisites.
  10. 10. Wind may pick up, transport, and deposit.</li></li></ul><li>Works of wind<br />Wind works in two ways to erode the materials. <br />They are a. By deflation and 2. by abration<br />Blow out<br />By deflation - <br />By Abration - Ventifacts<br />புடைத்தெடுத்தல் - ஊதுபள்ளங்கள்<br />உராய்ந்துதேய்த்தல்-பட்டைக்கற்கள்<br />
  11. 11. Bed Loads<br />Sand Storm<br />Dust storm<br />Barchan dune<br />
  12. 12.
  13. 13. Longitudinal dune<br />Transverse dune<br />Loess<br />
  14. 14. Loess and yellow river in China<br />Desert in central Asia<br />
  15. 15. Wind Erosion – Land forms<br />
  16. 16.
  17. 17. The end<br />
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