Ventifacts and yardangs are the result of
Wind erosion
Burial
Ice sculpting
Water erosion
The correct answer and explanation is :
The correct answer is Wind erosion.
Explanation:
Ventifacts and yardangs are both features formed by the process of wind erosion, which occurs when wind blows sand and other fine particles against the surface of rock or soil, gradually wearing it down over time.
Ventifacts:
A ventifact is a rock that has been shaped by the wind, particularly by the abrasive action of sand particles carried by the wind. The sand particles act like a natural sandblaster, striking the surface of the rock and gradually wearing it away. Ventifacts often have smooth, polished surfaces, and they can exhibit sharp edges and distinctive facets that show how the wind has shaped them. The process that forms ventifacts is most commonly seen in arid or semi-arid regions, such as deserts, where there is little vegetation to block the wind.
Yardangs:
Yardangs are elongated, streamlined ridges or hills formed in areas where the wind has eroded soft, unconsolidated material, such as sandstone or clay, leaving behind hard, resistant rock or sediment. Yardangs typically have a streamlined shape, meaning they are oriented in the direction of the prevailing winds. These features are also the result of wind erosion over long periods, where the wind removes weaker material and leaves more resistant material standing. Yardangs are often seen in desert landscapes, such as those found in the Sahara Desert or other arid regions around the world.
The Role of Wind in Erosion:
Wind erosion is particularly effective in arid climates where vegetation is sparse, and there is little moisture to bind the soil together. As wind blows across these regions, it picks up loose particles of sand, dust, and small rocks. These particles then strike and gradually erode rock surfaces, creating the distinctive features like ventifacts and yardangs. Over time, this process can sculpt impressive and intricate landforms.
Thus, ventifacts and yardangs are clear examples of landforms created through wind erosion rather than burial, ice sculpting, or water erosion.
