Lyndsey+Lieb

Excellent! Full Credit. Now remove this wikipage link from the group page... Dr. NHP Mass Wasting: Avalanche

An avalanche, or slide, is simply a mass of snow moving down a slope. There are two basic elements to a slide; a steep, snow-covered slope and a trigger.

Photo source: http://www.avalanche.org Definition source:http://www.pbs.org/wgbh/nova/avalanche/elements.html