Which of the following statements regarding Barchan is/are correct ?
- 1. It is a crescent shaped mound of sand, which is deposited by the wind blowing constantly from one direction in a desert.
- 2. The windward side has a convex steep slope with maximum height at the centre.
- 3. Two ends of Barchan are called horns and point opposite to the direction the wind blows.
Select the answer using the code given below :
1 only
1 and 2 only
2 and 3 only
1, 2 and 3
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-1 – 2024
Statement 3 is incorrect. The two ends of the crescent shape are called horns. These horns point downwind, in the direction that the wind is blowing, because the sand moves faster around the edges of the dune than at the center. They point *in* the direction of the wind flow, not opposite to it.