文档介绍：龙卷风的形成、危害、预测及自救措施浅析
摘要：龙卷风是一种自然界存在的天气现象，具有很强的破坏力，经常给人们的生命和财产安全带来严重危害，尤其是在美国。当下科学技术的发展还远不能准确的预测龙卷风的所有准确信息，保证所有人免于龙卷风的侵袭。通过加深对龙卷风的了解，可以在一定程度上有效地预防、预测龙卷风，尽量减少其危害并帮助人们安全逃生。因此，对
龙卷风的研究具有重要的意义。
该文在以科学实用、简单易懂的原则下，介绍了龙卷风的特点、龙卷风的形成条件、形成机制、动力源、龙卷风的发展过程以及龙卷风的危害、龙卷风来临前有哪些预兆、防范龙卷风的措施、减少龙卷风侵袭的方法和如何自救互救等方面的知识。文章内容充实，准确可靠的介绍了关于龙卷风的各个方面的知识，其中包括一些简单的了解内容，并侧重于龙卷风的形成、危害、预测和自救措施。全文有助于读者了解更多有关龙卷风知识和防灾、减灾技巧，掌握简单易行的应急避险措施和自救互救方法，提高人们面对龙卷风的应对能力，并安全的从龙卷风灾害中逃生。
关键字：龙卷风；基础知识；形成；危害；预测；自救措施
Tornado’s conformation、harm、prediction and self–help measure brief analysis
Abstract: tornado, a natural weather phenomenon, often makes great damages to people’s life, both economically and physically, with its huge destructiveness, especially in America. At present, the scientific and technological level is far less to exactly forecast all information about a tornado and to protect people from its invasion. By deepening the understand of tornadoes, we can effectively forecast and prevent tornadoes, to some degree, lessen damages and provide assistance to help people survive it. Therefore, the research of tornadoes is of great significance. In principle of scientific, practical, simple and understandable, this thesis introduces the characteristics, forming conditions, forming mechanism, motive power of a tornado, and its development, damage, and signs before it comes, as well as how to prevent it, mish its negative effects, and how to have self-aid or mutual aid when a tornado comes. The paper accurately introduces basic information about tornadoes and focus on how a tornado grows and makes damage, and some self-help measures, to make people known more about tornadoes and learn how to escape from a tornado disaster.
Key words: tornado; basic-knowledge; form; damage; forecast; self-help measure
目录
1 认识龙卷风 1
什么是龙卷风 1
1
1
2
2
2
2
2
，破坏力极强 3
3
龙卷风的分类 3