2. Erosion through Waves and wind: Chapter 8 Section 5 and 6

3. Waves How do waves form? The energy in waves comes from wind that blows across the water’s surface The energy causes water particles to move up and down; they do NOT move forward

4. Waves erode the shorelines in two ways Impact = hit with great intensity Abrasion = Erode the land away The sediments in the waves wear away the land like sandpaper wears away wood

5. Landforms Created by Wave Erosion Sea caves: Where rock is softer, the waves erode the area away over a period of time creating a “hollow area” in the rock

6. Wave-cut cliff: Waves erode the soft rock along the base of a steep coast

7. Sea arch: Forms when waves erode a layer of softer rock that underlies a layer of harder rock

8. Waves shape the land through deposition as well!! When waves slow down, the water drops sediments to the ground Beaches = formed from deposition Spit = A beach that projects like a finger out into the water. Created from currents in the water.

9. Erosion through Wind Deflation: The process by which wind removes surface materials The stronger the wind, the larger the particles it erodes Wind erosion is very similar to moving water erosion when it comes to the particles it carries Weakest agent of erosion

10. Wind erosion If there’s a slight depression in the ground, wind erosion may form a larger bowl-shaped hollow called a blowout.

11. Sediment carried by wind Sediments are deposited when the wind slows down or hits an obstacle Loess- (Les)particles of clay and silt eroded and deposited by the wind Sand dunes- coarser sediments eroded and deposited by the wind