How is a river pothole formed?
Answer and explanation
Correct answer: By swirling pebbles drilling a round hollow in the river bed
A river pothole is an erosional hollow formed in the bed of a turbulent stream. Pebbles and gravel become trapped in a small depression and are rotated by swirling eddies. Their repeated impact and abrasion grind the bedrock into a deeper, rounded cavity. Beach sand, windblown dust, and glacial debris are deposits and cannot explain this river-bed drilling process, so option D is correct.
Frequently asked questions
What is the correct answer to this question?
By swirling pebbles drilling a round hollow in the river bed
Why is this the correct answer?
A river pothole is an erosional hollow formed in the bed of a turbulent stream. Pebbles and gravel become trapped in a small depression and are rotated by swirling eddies. Their repeated impact and abrasion grind the bedrock into a deeper, rounded cavity. Beach sand, windblown dust, and glacial debris are deposits and cannot explain this river-bed drilling process, so option D is correct.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Recording of Transactions (I & II).
