ASC Risk Assessment & Mitigation 2

Question 1

Which snowpack layer characteristic is most indicative of a persistent weak layer capable of triggering avalanches weeks after burial?

Accepted Answer

Faceted crystals with poor interlayer bonding

Answer

Faceted crystals form through temperature gradient metamorphism and maintain weak bonds even after burial, creating persistent weak layers.

Question 2

When evaluating avalanche risk on a slope, what does a 'whumpfing' sound from the snowpack indicate?

Accepted Answer

A buried weak layer collapsing under load

Answer

Whumpfing indicates sudden collapse of a buried weak layer, a clear sign of an unstable snowpack with high avalanche potential.

Question 3

A group is planning a ski tour. Recent loading from 18 inches of new snow has occurred. What is the MOST appropriate risk mitigation strategy?

Accepted Answer

Avoid convex rolls and lee slopes, travel one at a time on risky terrain

Answer

Avoiding terrain traps and convex rolls while practicing one-at-a-time travel limits exposure and reduces consequence if an avalanche releases.

Question 4

The 'Obvious Clues' category in avalanche risk assessment includes which of the following?

Accepted Answer

Recent avalanche activity visible on surrounding slopes

Answer

Recent avalanche activity on surrounding slopes is one of the strongest obvious clues of current instability.

Question 5

What is the primary purpose of the Avalanche Terrain Exposure Scale (ATES)?

Accepted Answer

To classify route difficulty based on avalanche terrain complexity

Answer

ATES classifies terrain into Simple, Challenging, and Complex categories based on avalanche exposure to help trip planners match terrain to skill and conditions.

(ASC) Avalanche Safety Certification Practice Test

(ASC) Avalanche Safety Certification Practice Test

ASC Risk Assessment & Mitigation 2