Under which condition does a barchan dune form best?
Answer and explanation
Correct answer: Limited sand supply and steady wind from one direction
A barchan is a crescent-shaped dune produced where sand is limited and wind blows predominantly from one direction. The windward side is gently sloping, while the horns extend downwind and are often shaped by the thinner sand cover at the margins. Abundant vegetation or wet ground restricts sand movement, whereas deep-sea currents and glacial meltwater create unrelated depositional or erosional features.
Frequently asked questions
What is the correct answer to this question?
Limited sand supply and steady wind from one direction
Why is this the correct answer?
A barchan is a crescent-shaped dune produced where sand is limited and wind blows predominantly from one direction. The windward side is gently sloping, while the horns extend downwind and are often shaped by the thinner sand cover at the margins. Abundant vegetation or wet ground restricts sand movement, whereas deep-sea currents and glacial meltwater create unrelated depositional or erosional features.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting.
