Which landform is edivence of Wind erosion?
A: Sand dunes
B: U-shaped valleys
C: hoodoos
D: Grand Canyon
A: Sand dunes
The landform that is evidence of wind erosion is A: Sand dunes.
The landform that is evidence of wind erosion is option A: Sand dunes. Now, let me explain how you can arrive at the answer to this question.
To identify the landforms that are shaped by wind erosion, you need to understand the processes involved and the resulting features. Wind erosion occurs when the wind lifts and transports sediment, leading to the gradual wearing away of land surfaces.
Sand dunes are one of the most well-known landforms created by wind erosion. They are formed as the wind blows across loose and dry sand, picking up tiny grains and carrying them along. Eventually, the sand particles settle and accumulate, forming distinct mounds or ridges called dunes. The shape and size of sand dunes can vary depending on factors such as wind direction, sand availability, and local topography.
On the other hand, the other options listed are not primarily associated with wind erosion. U-shaped valleys (option B) are formed by glaciation, specifically the movement of glaciers that sculpt the land. Hoodoos (option C) are tall, thin spires of rock that result from the differential erosion of soft and hard rock layers, often in arid environments. The Grand Canyon (option D) is primarily carved by the Colorado River over millions of years, with the primary agent of erosion being water rather than wind.
Therefore, based on this explanation, the correct answer is option A: Sand dunes, as they are a distinctive landform shaped by wind erosion.