Which condition is most important for a narrow gorge in a bedrock channel?
Answer and explanation
Correct answer: The rate of vertical incision is greater than the rate of lateral widening
A narrow gorge forms where stream power is concentrated on downward incision into bedrock rather than on widening the valley sideways. Resistant rock, a steep gradient, uplift, or a fall in base level can encourage this imbalance, but the defining condition is that vertical cutting exceeds lateral erosion. Hence A is correct; the remaining choices describe deposition or unrelated coastal and glacial processes.
Frequently asked questions
What is the correct answer to this question?
The rate of vertical incision is greater than the rate of lateral widening
Why is this the correct answer?
A narrow gorge forms where stream power is concentrated on downward incision into bedrock rather than on widening the valley sideways. Resistant rock, a steep gradient, uplift, or a fall in base level can encourage this imbalance, but the defining condition is that vertical cutting exceeds lateral erosion. Hence A is correct; the remaining choices describe deposition or unrelated coastal and glacial processes.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Accounting Information.
