Wind Erosion2/17/ pgs IN: What are some ways that waves shape the shoreline?

 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.

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

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

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

 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.

Dunes – mounds of wind-deposited sand.

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

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

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