Abrasion (a-bray-tjin): wearing away of rocks and removal of soil by particles or load carried by wind.. 2. Dune: A mound of sand built up by wind. Wind-deposited materials occur as sand sheets, ripples and dunes. The higher the elevation, the farther the stream is from where it will reach base level and the more cutting it has to do. Running water: erosion, transportation, and deposition. Winds erode the lower section of the rock more than the upper part. Winds cause deflation, abrasion and … Features produced by Wind Deposition; Title . Selima in South Egypt. Features produced by Wind Deposition . The work of the river is mainly deposition, building up its bed and forming an extensive flood plain. In deserts, wind action changes the landscape through wind erosion in the form of abrasion and deflation. Erosion occurs when overland flow moves soil particles downslope. Landforms like braided channels, floodplains, levees, meanders, oxbow lakes, deltas etc. % In deserts there are numerous rocks with a shape of a mushroom. In the process of wind abrasion, wind drives sand and dust particles against an exposed rock or … Three processes of wind erosion. Abrasion 2. They are commonly called mushroom rocks. Sand Dune Deflation (di-flay-tjin): removal of loose material from the earth’s surface.. 3. The soil erosion is the process by which the moving water or wind removes the fertile top layer of the soil. The sediments carried by wind get deposited on both the wind ward and leeward sides of these obstacles. Thirdly the broadening of cracks and crevices in the cliffs along the coast due to the attack of the sea waves is called the hydraulic action. Wind is a powerful force that has the ability to shape a landscape. Deposition: The process in which transported sediment is laid down. Some of the depositional landforms are sand dunes, barchans and loess. As the wind slows, it deposits the largest particles first. Attrition. Loess: Deposits of fine-grained, wind-blown sediment. 1. Deflation 3. Streams work to down cut in their stream beds until they reach base level. Like water, when wind slows down it drops the sediment it's carrying. 1. Stream Deposition. 45% of depositional surfaces are of this type, e.g. Glacier: A large mass of ice that exists year-round and moves over land. As a stream gets closer to base level, its gradient lowers and it deposits more material than it … Describe the work of wind erosion and state two important landforms of wind erosion. Deposition occurs when the speed of wind is reduced by the presence of obstacles like bushes, forests and rock structures. Explains wind erosion and deposition, where ventifacts and sand dunes are created. Sand sheets These are flat areas of sand with sand grains that are too large to saltate. Wind Deposition. This often happens when the wind has to move over or around an obstacle. A rock or tree may cause wind to slow down. Question 1. Quick revise. Answer: Winds move along the desert floors with great speed and the obstructions in their path create turbulence. Work of Wind. Erosion: The process in which sediment is picked up and moved from one place to another. Different types of deposits form depending on the size of the particles deposited. Answer: Work pi Wind: An active agent of erosion and deposition in the deserts is wind. Depositional Landforms of wind . Give an account of the work of wind. Storm winds are formed which are very destructive. can be seen at this stage.

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