选修六u5warming up.pptVIP

* Unit 5 How does nature show its power? Warming up Please name the disasters you know. disasters/catastrophe earthquake flood sandstorm mudflow/mudslide tsunami tornado volcano Typhoon/hurricane snow slide … A?powerful?earthquake?in?China?is?feared?to?have killed? thousands?of?people?in?the southwestern province?of?Sichuan.? The?official?news?agency?Xihua says nearly?ten?thousand?people ?may?have?died,?with many?more?buried?and?injured. -BBC,2008 In the summer of 1998,?China?experienced massive?flooding Sandstorms have caused poor visibility in the city where objects further away than one kilometer cant be seen clearly. Winds are up to 50 kilometers per hour, almost covering the city in sand. Cars and trucks remain mired in mud. Mudflow/mudslide Japans most powerful earthquake since records began has struck the north-east coast, triggering a massive tsunami. 11 March 2011 tornado The violent storms strike in many parts of the world but happen most commonly in the United States. Mount Kilauea, the world’s most active volcano, is on the island of Hawaii. A super typhoon has struck the northern Philippines with heavy rain and winds of up to 260km/h (162mph), leaving at least three people dead. 18 October 2010 typhoon/hurricane 飓风和台风其实是一回事,都是指风速达到33米/秒以上的热带气旋,只是因为发生的地域不同, 才有了不同的名称.出现在西北太平洋和我国南海的强烈热带气旋被称为“台风”； 发生在大西洋、加勒比海和北太平洋东部的则称为“飓风”. snow slide What do you feel when you see those pictures ? Have you ever experienced one directly or indirectly ? Volcano is one those great natural disasters. Have you ever seen a volcano? What do you know about it? Active volcano Dormant volcano Extinct volcano Boiling rock erupts from the crater; the lava flows slowly down the mountain. Magma chamber Lava Crater Ash cloud/volcanic ash Do you know how a volcano erupts? 岩浆房 volcano-eruption Mount Kilauea Volcanoes in Hawaii are called shield volcanoes(盾火山) because of the way their lava flows out slowly in all