Wind
As you know, it is not always possible to see wind with your own two eyes. Sometimes you can somewhat even hear it. Although you can see the deposition that wind has done. If you've ever been out in a desert before, it is possible enough to see sand dunes from closer or far away. A sand dune is a deposit of wind blown sand. That sand is blown from perhaps sand storms, or even just small amounts of wind. Since sand dunes are just like hills made out of sand, they can reach up to huge heights.
Waves, water, moving ice, and also mass movement can erode and deposit more than wind can. That is because wind is the weakest agent of erosion and deposition. Although wind is a powerful force in shaping the land in areas where there are only a couple of plants to keep the soil in direct place. Winds can very easily move grains from dry sand when there is a very tiny amount of plants near by. Deflation and abrasion is what causes erosion by wind.
Deflation
Deflation is the main way that wind can erode away land. Deflation is the process of moving surface materials. As wind blows over land, it picks up miniature particles of sediment. The sediment is made up of small particles of clay and silt. Mostly sandstorms are what picks up most sediment, because the higher the winds, the more particles wind will be able to carry. Heavier particles much like sand may skip and bounce a little, since it is heavier. Yet deflation does not always have the greatest effect on the land in which you think it would. Desert pavement is sometimes what can be created from deflation, since it removes sediment. The remains such as larger and heavier rocks are usually still there, only because wind can only carry so much of the sediment from the land. A blowout can sometimes be in the ground because deflation can cause the look of a bowl-like hole in the ground.
Abrasion
Sometimes, wind carried sand can polish rock, yet very little erosion in the process. At a point, geologists used to think that sediment carried by wind was what had cut the stone shapes seen in the deserts. Most desert land forms are the result of weathering and water erosion, proven by evidence.
Wind Deposition Image
Sediment that is picked up and carried by wind will all eventually fall to the ground once again. This is because when wind slows down, most likely because of an obstacle such as a heavier rock, that obstacle can trap the sediment that is windblown. Wind erosion and deposition can form sand dunes and loess deposits. When wind strikes an obstacle, a sand dune is usually the result. You can see sand dunes where wind has pilled up sand in places like deserts and beaches.