* Deflation: Wind can pick up and carry away loose materials, such as sand and dust, a process known as deflation. This can create a variety of geological features, including sand dunes, blowouts, and yardangs.
* Abrasion: Wind-blown sand and dust can also abrade rocks, wearing them down over time. This process can create features such as tafoni, which are small cavities in the rock, and ventifacts, which are rocks that have been smoothed and polished by the wind.
* Deposition: Wind can also deposit materials, such as sand and dust, to build up new geological features, including sand dunes and loess deposits.
Water
* Erosion: Water is a powerful erosional force, and can move large amounts of material, such as sediment, rocks, and soil, in several different ways. One way is through the action of waves, which can break down cliffs and beaches, creating sea stacks, arches, and other coastal landforms. Another way is through the flow of rivers and streams, which can carve out valleys, canyons, and other fluvial features.
* Transportation: Water can also transport materials, such as sediment and rocks, from one place to another. This process can occur in a variety of ways, including through the flow of rivers and streams, the action of waves, and the movement of glaciers.
* Deposition: Water can also deposit materials, such as sediment and rocks, to build up new geological features. One way is through the formation of deltas, which are formed when sediment is deposited at the mouth of a river. Another way is through the formation of alluvial fans, which are formed when sediment is deposited at the base of a mountain.