Kindergarten Lesson Plan "The Formation of an Avalanche"

Generally speaking, avalanches are prone to occur in places with high mountains, deep valleys, steep slopes, strong winds, and abundant rainfall. For example, the Himalayas are the world’s largest and tallest mountains, including many peaks such as Mount Everest and Shishapang. Ma Peak, Cho Oyu Peak, Nanga Parbat at the west end, Namjagbarwa Peak at the east end, etc. They are all areas with steep terrain, abundant snow, and developed glaciers. Especially the south side is frequently adjacent to the Indian Ocean and is affected by the ocean. Affected by the seasonal monsoon climate, abundant ice and snow accumulation, and frequent avalanches are the main supply method for the development of glaciers. They are also the main mountain disasters and the greatest source of danger to mountaineering activities. Generally speaking, avalanches can be summarized as natural causes and man-made causes. Two types.

Natural avalanches are mainly caused by strong winds, blizzards or storms, heavy rain, heavy snow, exposure, severe cold, frost, earthquakes, etc. Human-made causes are due to lack of experience on the part of climbers who mistakenly enter avalanche areas, or even due to People shouting loudly on high mountains and other sound waves and vibrations destroy the balance of the snow environment and cause sudden avalanches; climbers building roads that cross the snow layer profile are more likely to cause instability in the snow above... etc. According to avalanche movement The types of avalanches are divided into avalanches and surface avalanches. The types of avalanches can be divided into dry snow avalanches and wet snow avalanches. According to experience, avalanches generally occur on snow slopes with a slope of more than 25 degrees; they mostly occur in the afternoon and evening. Avalanches are most likely to occur in rainy and snowy weather, especially foggy days, windy days, and storms.