Avalanche+Causes+(before)


 * Causes for Avalanches.**

Snow avalanches occur for various reasons. They can occur when the load on the upper snow layers exceeds the bonding force of a mass of snow (which bonds the layer beneath, horizontal internal stability,support from anchors such as rocks and tress, stress support from top or bottom of the slope. A low timber line will exaggerate the threat because trees help hold snow in place and snow it down once it begin to move. 1179246594 Angelica F. Per.1

1178897997 Marjory R. Per. 1
 * Avalanches can be caused by a vibration or movement like the voice of a person or the vibration of a train.
 * Also by layers of snow building up and sliding down a mountain.
 * Weather conditions like wind and rain can cause avalanches to fall down like a landslide.

First it's quiet, then all of a sudden, there's a shake, and snow is barrolling down the mountain. It destroys anything and everything in it's path.1179426400