1. Wind Erosion2/17/12 12-2 pgs. 304-308 IN: What are some ways that waves shape the shoreline?

2.  Terms: Saltation deflation abrasion duneloess  Objectives: Explain why areas with fine materials are more vulnerable to wind erosion. Describe how wind moves sand and finer materials. Describe the effects of wind erosion.

3.  Saltation – the movement of sand- sized particles by a skipping and bouncing action in the direction the wind is blowing.

4.  Deflation – the lifting and removal of fine sediment by wind.  Leaving behind rock fragments.

5.  Abrasion – the grinding and wearing down of rock surfaces by other rock or sand particles.

6.  All the material carried by the wind is eventually deposited downwind.  The faster the wind blows, the more material and the heavier the particles it can carry.

7. Dunes – mounds of wind-deposited sand.

9.  Dunes tend to move in the direction of strong prevailing winds.

11. Loess – thick deposits of windblown, fine-grained sediment.  Very fine sediment, most came from last ice-age and are blown large distances, makes great soil for crops

12. OUT: What areas have the greatest amount of wind erosion and deposition? Why?