Which statement correctly distinguishes rapids from waterfalls?
Answer and explanation
Correct answer: In rapids, water flows rapidly over a rough, steep bed, whereas a waterfall has a distinct vertical or near-vertical drop.
The governing concept is the difference in channel gradient and the nature of the drop. Rapids occur where a river descends quickly over an uneven or stepped bed, but the water remains within the channel. A waterfall has a sharper, commonly vertical fall over a pronounced step. Thus option A is correct; B wrongly assigns formation to wind, C ignores rivers, and D confuses upper-course features with deltaic deposition.
Frequently asked questions
What is the correct answer to this question?
In rapids, water flows rapidly over a rough, steep bed, whereas a waterfall has a distinct vertical or near-vertical drop.
Why is this the correct answer?
The governing concept is the difference in channel gradient and the nature of the drop. Rapids occur where a river descends quickly over an uneven or stepped bed, but the water remains within the channel. A waterfall has a sharper, commonly vertical fall over a pronounced step. Thus option A is correct; B wrongly assigns formation to wind, C ignores rivers, and D confuses upper-course features with deltaic deposition.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Financial Statements I.
