In river deposition, how does sediment size generally change downstream?
Answer and explanation
Correct answer: From coarse upstream to finer downstream
A river normally loses gradient, velocity and transporting energy downstream. As energy falls, large boulders and coarse gravel are deposited earlier, while smaller sand, silt and clay can travel farther toward the lower course and mouth. Thus sediment generally becomes finer downstream, making option A correct. Option B reverses the normal trend, while C and D ignore sorting by stream energy.
Frequently asked questions
What is the correct answer to this question?
From coarse upstream to finer downstream
Why is this the correct answer?
A river normally loses gradient, velocity and transporting energy downstream. As energy falls, large boulders and coarse gravel are deposited earlier, while smaller sand, silt and clay can travel farther toward the lower course and mouth. Thus sediment generally becomes finer downstream, making option A correct. Option B reverses the normal trend, while C and D ignore sorting by stream energy.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bills of Exchange. Topic: Introduction and Concepts.
