Why do natural levees form along river banks?
Answer and explanation
Correct answer: Because coarse particles settle quickly near the banks during floods
The correct answer is B. When floodwater spills over a river bank, its depth and velocity decrease suddenly. The heaviest and coarsest sand and silt particles therefore lose transport capacity first and settle close to the channel. Repeated floods build slightly raised embankments called natural levees. Fine material is carried farther onto the floodplain, so general river-bed uplift, wind, and glacier blockage do not explain levee formation.
Frequently asked questions
What is the correct answer to this question?
Because coarse particles settle quickly near the banks during floods
Why is this the correct answer?
The correct answer is B. When floodwater spills over a river bank, its depth and velocity decrease suddenly. The heaviest and coarsest sand and silt particles therefore lose transport capacity first and settle close to the channel. Repeated floods build slightly raised embankments called natural levees. Fine material is carried farther onto the floodplain, so general river-bed uplift, wind, and glacier blockage do not explain levee formation.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bank Reconciliation Statement. Topic: Reconciling cash book and passbook differences.
