Point-Release Avalanches

question 83

Multiple Choice

Point-release avalanches

• A) occur at the heads of valleys and widen as they travel down-valley.
• B) occur when several small avalanches from different points converge into a larger avalanche.
• C) begin with a small avalanche of snow, which causes adjacent failures as it moves downslope.
• D) begin when icy slabs fall off steep cliffs and pick up more snow as they travel downslope.
• E) erode the snow away to the rock underneath, leaving V-shaped snow valleys.

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Definitions:

Bones

The hard, dense connective tissue forming the skeleton of most vertebrates, serving as a framework for the body and protecting vital organs.

Kneecap

Also known as the patella, it is the bone that covers and protects the front of the knee joint.

Fibula

A long, thin bone located on the lateral side of the tibia in the lower leg.

Tibia

A large bone located in the lower leg, commonly known as the shinbone.