Traditional Culture Encyclopedia - Weather inquiry - What should I do when a snowstorm happens?
What should I do when a snowstorm happens?
Teaching plan of snow disaster prevention safety course
Teaching purpose:
Know the danger of snowstorm.
2. Know how to pay attention to traffic safety in snowstorm weather.
Teaching preparation:
Teaching and pictures about snowstorms.
Teaching process:
First, the introduction of new courses.
In winter and spring, there is often heavy snow. As our students, we should go to school on time, but students don't know much about the dangers of snowstorms and what problems should be paid attention to in such weather. We will learn this knowledge in this class.
Second, the new teaching
1, what is blizzard?
In winter and spring, when strong cold air erupts southward, strong cooling and strong wind often accompany snowfall or strong wind to roll up snow on the ground. Flying snow with wind, visibility is extremely low. This is a "snowstorm", which is called "snow blowing" or "snowstorm" in meteorology.
2. What are the hazards of snowstorm?
In snowstorm weather, due to the increase of non-evaporation heat dissipation, the body temperature of livestock will gradually decrease after maintaining the thermal adjustment balance for a period of time. According to the determination, in the low temperature and windy environment, the temperature of sheep will drop to about 28℃ in spring, which will lead to death. The forage grass is yellow, and the quantity is small, the quality is low, the livestock is weak and fat, and the cold resistance is reduced. When a snowstorm strikes, it not only makes the herd panic, but also often runs with the wind because it can't tell the direction.
Stop, can't catch up with the circle, often fall into the lake bubble or fall off the cliff, and die and freeze to death. Pregnant female animals run in adversity, which easily leads to mechanical abortion; Even in the shed, because of shelter from the wind and Leng Xue, they often pile up with each other to keep warm, which will also cause pregnant female animals to miscarry, and some will be crushed to death alive. Some young animals even indulge in polluted snow or frozen grassland, which leads to the outbreak of malignant infectious diseases and the death rate of young animals rises sharply. Therefore, snowstorm is one of the disastrous weather in animal husbandry production. 1From February to early April, 1966, there were continuous snowstorms in Yili, Tacheng and Altay, Xinjiang, with the snow depth reaching 25-45cm, of which the maximum snow depth in Altay in February reached 73cm, and the stable snow lasted until April. 16. The wind power is generally 6-7, with some reaching 9-10. Blizzard and low temperature snow caused livestock losses of 4 1 10000 (only) in Xinjiang, and the losses in Altay alone reached 654380+000000 (only), accounting for more than 40% of the total.
3. What problems should I pay attention to when traveling in snowstorm weather?
Pay attention to cold and warmth; On the way to and from school, because the road is slippery, be careful to prevent falling; Stay away from vehicles and drive on the right.
Play pictures of traffic accidents caused by snowstorm on the big screen to attract students' attention.
5. Guide the students to talk about the gains of this lesson.
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