1. Wind Erosion

2. How the wind transports and erodes material

3. When the particles carried by the wind are dragged across a surface, they act like sandpaper, etching, polishing and pitting surfaces. Wind can erode by abrasion or deflation

4. Deflation ---the process of removing surface materials by wind erosion High elevations are left due to vegetative stabilization

6. Natural arch Typically formed by a combination of wind and water Narrow ridges are formed and the softer substrata is weathered first, forming a bridge/arch overhead

8. Ventifact Stones that have been sculpted by the wind Wind carries fine particles that work like a sand blaster (i.e. sand, silt, clay, and ice particles) The windward face of the rock is flattened and smoothed Usually pebble to cobble sized

10. A type of ventifact that has three ridges Multiple faces have been formed by either a changing prevailing wind or movement of the actual rock being weathered Dreikanter

12. Desert pavement Formed in arid environments when wind carries finer, more lightweight particles such as sand away Large particles are left behind and protect from further erosion

14. Loess Yellowish, fine grained silt and clay sized particles Formed by glaciers Carried and deposited by wind

16. Sand Dunes Piles of sand Deposited by wind Leeward side (slipface) has a steeper slope Windward side is more gradual

17. leeward windward

18. Barchan Dune Crescent shaped dunes Concave side is the leeward side Formed from a unidirectional wind

21. Transverse dunes A dune that elongates perpendicular to the prevailing wind (rippled appearance) Caused by a combination of wind directions

25. Parabolic dunes Crescent shaped dunes, U-shaped Concave side is the windward side Found in coastal deserts Arms of the crescent lag behind because they are held in place by vegetation

27. Linear dunes Form in areas with limited sand supplies and winds that converge from different directions

29. Star dunes Form in areas of abundant sands and variable wind directions

31. Ergs Huge dune fields

33. Ripple marks Miniature dunes within a dune (not more than 2 inches tall) Formed by wind May form from cross winds and appear to be traveling in a different direction than the large dune

35. Pedestal rock Base of a rock is weathered and eroded more quickly due to sand blasting

37. Yardang Streamlined, bedrock hills extensively grooved, fluted, and pitted by wind erosion. alternating ridges parallel to the dominant wind direction occur in various deserts of the world including the Turkistan and the Mojave deserts