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Consider the following statements:
Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction.
Seif is similar to barchan.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements: Crescent shaped dunes, called b...
Crescent shaped dunes, called barchans, with the points or wings directed away from wind direction, i.e., downwind, form where the wind direction is constant and moderate, and where the original surface over which sand is moving is almost uniform. Parabolic dunes form when sandy surfaces are partially covered with vegetation. That means parabolic dunes are reversed barchans with wind direction being the same. Seif is similar to barchan with a small difference. Seif has only one wing or point. This happens when there is a shift in the wind conditions. The lone wings of seifs can grow very long and high.
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Consider the following statements: Crescent shaped dunes, called b...
Explanation:
Statement 1: Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction.
This statement is correct. Barchans are crescent-shaped dunes that form in areas with limited sand supply and a unidirectional wind. The wind blows sand up the gentle windward slope of the dune until it reaches its crest. From there, the sand cascades down the steep leeward slope, forming a sharp point or wing that points away from the wind direction. This shape is characteristic of barchan dunes.
Statement 2: Seif is similar to barchan.
This statement is also correct. Seif dunes are similar to barchan dunes in terms of their shape and formation. Like barchans, seif dunes are crescent-shaped and have their points or wings directed away from the wind direction. However, seif dunes are larger and longer than barchans, often stretching for several kilometers. They are also formed in areas with unidirectional winds and limited sand supply.
Conclusion:
Both statements 1 and 2 are correct. Barchans and seif dunes share similar characteristics, such as their crescent shape and the direction of their points or wings away from the wind direction. Barchans are smaller and more common, while seif dunes are larger and less frequently found.
Statement 1: Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction.
This statement is correct. Barchans are crescent-shaped dunes that form in areas with limited sand supply and a unidirectional wind. The wind blows sand up the gentle windward slope of the dune until it reaches its crest. From there, the sand cascades down the steep leeward slope, forming a sharp point or wing that points away from the wind direction. This shape is characteristic of barchan dunes.
Statement 2: Seif is similar to barchan.
This statement is also correct. Seif dunes are similar to barchan dunes in terms of their shape and formation. Like barchans, seif dunes are crescent-shaped and have their points or wings directed away from the wind direction. However, seif dunes are larger and longer than barchans, often stretching for several kilometers. They are also formed in areas with unidirectional winds and limited sand supply.
Conclusion:
Both statements 1 and 2 are correct. Barchans and seif dunes share similar characteristics, such as their crescent shape and the direction of their points or wings away from the wind direction. Barchans are smaller and more common, while seif dunes are larger and less frequently found.
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Consider the following statements: Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction. Seif is similar to barchan. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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Consider the following statements: Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction. Seif is similar to barchan. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements: Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction. Seif is similar to barchan. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements: Crescent shaped dunes, called barchans, with the points or wings directed away from the wind direction. Seif is similar to barchan. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?.
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