U4 earthquake.ppt

Do you know some other serious earthquakes that happened before? 《华西都市报》5月10日报道，四川绵竹市西南镇檀木村出现大规模蟾蜍迁徙，数十万蟾蜍拥挤着走上了马路。面对这一异常现象，村民们普遍表示担扰，害怕可能是地震或其他自然灾害的预兆。 国家地震局赈灾应急救援司 司长黄建发在新闻发布会上表示， 目前地震的准确预测仍是一个世 界性的难题，此次汶川地震没有 提前预测到。 据新华社华盛顿5月21日电 在中国 以及世界其他一些国家，都有不少民 间的地震预测说法，比如动物的异常 行为、奇特天象出现等。美国专家琼 斯说，这些说法到目前为止都还没有 真正的科学依据。世界各国的很多科 学家曾不止一次地试图证实这些预测 的科学性，但到现在也没有找到十分 确凿的证据。 　　琼斯说，从另外的角度说，即便 这些异常可以作为预报地震的参考数 据，地震监测人员也不能仅仅依靠某 一个单独的异常现象作出地震预报， 因为这类异常可能只对应极小的地震 几率，假如误报了地震，直接和间接 损失往往也是相当严重的。　　 One third of the people died or were injured during the earthquake. 2. Such a great number of people died because the quake happened while they were working. 3. All the hospitals had been destroyed. 4. Water was needed because dams and wells were useless. True or false Scanning Reading Comprehension IV 汶川地震的前兆 地震可以预测吗? * Unit 4 Earthquakes fire Look at the pictures below and name these disasters if you know. typhoon / hurricane volcano eruption snow slide mudflow tornado sandstorm flood tsunami earthquake Buildings fall down. What happens when there’s an earthquake? Roads, bridges and railways are destroyed. Many things lie in ruins. The supply of electricity and water is cut off. Many people are killed or injured. More people are left homeless. What happened on 12 May, 2008 ? A terrible earthquake struck Sichuan, China on May 12, 2008. More than 60,000 people lost their lives. Tangshan 唐山大地震三十周年后的新唐山 Skimming to get general ideas The passage mainly talks about a/an ___________ that happened in _________ in ______. Skimming Reading Comprehension I earthquake Tangshan 1976 1. The earthquake began at ________. A. 3:00 am, June 28, 1976 B. 3:00 am, July 28, 1976 C. 3:42 am, July 28, 1976 2. _________ people were killed or injured in the quake. A. Less than 400,000 B. More than 400,000 C. More than 150,000 Skimming Reading Comprehension II Careful reading to solve difficult points Part 1: para 1 Part 2: paras 23 Part