One of the eagerly awaited units for our students, is the 8th grade snow physics science unit. Larry spends a great deal of time out with the students talking about snow crystal classification, distinctive layers in the snowpack, ET and destructive metamorphism, as well as the "how to" of backcountry travel and avalanche safety. This short video covers the topic of how to do a shovel test to identify weak layers that might fail in the snowpack.