Question

Glaciers form, and grow, when: A. When basal slip occurs. B. Ablation exceeds accumulation. C. Accumulation...

Glaciers form, and grow, when:

A. When basal slip occurs.

B. Ablation exceeds accumulation.

C. Accumulation exceeds ablation.

D. Plastic flow of ice occurs.

Science   Earth-Sciences   
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Answer #1

Correct option is 'C', Accumulations exceeds ablation.

Glaciers are a body of snow accumulation, which is dynamic in nature. It keeps on changing in terms of the amount of ice and it's movement. Accumulation in glacier refers to the addition of ice, ablation refers to loss of ice through various process such as melting, calving etc. So if a glacier has to form or grow the input of ice must be greater than output of ice. The difference between the input and output will be then accumulated. So that is the reason glacier grow and form when Accumulation exceeds the Ablation.

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