When the uppermost layer of snow destabilizes and a distinct section breaks free,the mass is called a
A) drift avalanche.
B) moraine avalanche.
C) slab avalanche.
D) rockfall.
E) talus apron.

Question

Quizplus · Accepted Answer

A slab avalanche occurs when a layer of snow breaks free and slides down a slope, often triggered by a disturbance such as a skier or snowmobiler. The other options are not related to snow avalanches. A moraine is a glacial feature, a rockfall is when rocks fall down a slope, and a talus apron is a pile of rocks at the base of a slope.

When the Uppermost Layer of Snow Destabilizes and a Distinct