Outline for Informative Speech
Outline for Informative Speech I. Intro A. Raise your hands if you like or want to snowboard, ski, snowmobile top three in creating avalanche B. (Picture)I am here to notify my fellow classmates about the dangers of Avalanches C. (Picture)Why avalanches because Montana is one of the top 3 states for avalanche deaths in the U.S. D. (Picture)All my research is from the websites of National Geographic, National snow and Ice data center, and most importantly The Forest Service National Avalanche Center E. (Write on Board)Today I will talk to you about , what conditions cause avalanches, how avalanches form, and safety tips to avoid avalanches
II. Body A. First I would like to talk about the different conditions that increase the chance of an avalanche 1. The first condition is if there was heavy rain and snowfall it can make the snowback unstable * Most avalanches are triggered the first clear day after a storm
2. (Picture)The second condition is if there is a lot of windblown snow. * Wind can deposit snow 10 times faster than snow falling from storms * (Board) The windblown snow usually travels lee ward side of a mountain 3. The last and most important condition is a rapid increase in temperature and gravity * The nearer this brings the snow temperature to 0 degrees C, the higher the hazard
(picture)For example, have you ever noticed the layer of snow on a car windshield after a snowfall? While the temperature remains low, the snow sticks to the surface and does not slide off. After the temperature increases, however, the snow will slide, down the front of the windshield, often in small slabs
B. Next I will talk about how the avalanches occur under these conditions 1. (EX picture) weak snow gravity and weight 2. *Avalanche fatalities by activities 3. *First off almost all avalanches occur on slopes from 35 to 50 degress 4. (EX picture)Avalanche trail 5.