Unit4 Natural disasters Typhoons 课件-2025-2026学年高中英语人教版（2019）必修第一册

Natural Disaster ——Typhoons: Power and Prevention 1.Formation 2.The impact on society 3.Prevention Contents ｖｉｄｅｏ ｔｉｍｅ Part 1 Formation The main area where typhoons are generated, usually in the waters near the equator, where the sea temperature needs to be maintained above 26 degrees Celsius（26℃） to provide energy sources for typhoons. Warm sea area Enough water vapor A large amount of water vapor is an important factor in the development of typhoons. It rises through evaporation, forms cloud and releases heat, promoting the strengthening of typhoons. Part 2 The Impact on Society let's have a look at the effects on society. Typhoons cause extensive damage to crops, leading to a decrease in grain production and directly affecting farmers' income. Agricultural destruction Economic Loss Economic Loss Business Typhoons have a negative impact on business by delaying production, increasing costs, impacting tourism, and leading to a slowdown in economic activity. Rainstorm accompanied by typhoon may quickly cause flood, and people are vulnerable to drowning if they are not evacuated in time. Personal safety threats Flood Personal safety threats Strong winds causing injury The strong winds brought by typhoons can blow down pedestrians, leading to injuries or even fatalities. Part 3 Prevention Carry out regular disaster prevention and reduction education activities to enhance the public's awareness of typhoons and self-protection. Public education popularization Try to stay indoors in a safe place and stay away from potentially broken objects such as windows and glass doors. If outdoors, seek out hard buildings as soon as possible to take shelter. THANK　YOU Lavf57.62.100 Tencent CAPD MTS (T-tech) Lavf57.62.100 Tencent CAPD MTS (T-tech) $$