1. Wind Erosion
Chapter 4.4

2. Key Question
How does wind cause erosion and deposition?

3. . abrasion
You should know this word
Wind blown sediment strikes a rocks surface and it gets scraped and worn away.
A scraped knee is an abrasion.

4. Wind Erosion
Wind moves particles in three ways. Which of the words--fine, medium, or large--correctly begins each sentence?
Fine
Medium
Large

5. Deflation
The process by which wind removes surface materials.

6. Sand dune A deposit of wind blown sand.
Shape determined by direction of wind, amount of sand, presence of plants.

7. Loess (LOH es)
A wind-formed deposit made of fine particles of clay and silt.
Consistency like talcum powder

8. Dust storms
These storms blow topsoil from open fields, overgrazed areas, and places where vegetation has disappeared.

9. Key Question How does wind cause erosion and deposition?
Wind causes erosion through deflation and abrasion.