What is the significance of a bergschrund in a mountain glacier?
Answer and explanation
Correct answer: It can be a large crevasse between moving ice and fixed ice or rock
The governing concept is differential glacier movement. A bergschrund is a large crevasse that commonly opens where the moving glacier ice separates from relatively fixed ice or the rock wall near the head of a cirque. Tension develops because the lower ice flows while the upper margin is restrained. Therefore option A is correct. A point bar is fluvial, a spit is coastal, and a polje is a karst basin, so the other options involve different agents.
Frequently asked questions
What is the correct answer to this question?
It can be a large crevasse between moving ice and fixed ice or rock
Why is this the correct answer?
The governing concept is differential glacier movement. A bergschrund is a large crevasse that commonly opens where the moving glacier ice separates from relatively fixed ice or the rock wall near the head of a cirque. Tension develops because the lower ice flows while the upper margin is restrained. Therefore option A is correct. A point bar is fluvial, a spit is coastal, and a polje is a karst basin, so the other options involve different agents.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
