人教版英语选修6 Unit5 The power of nature 1(ppt)

Unit5 The power ofnatureUnit5 The power ofnaturePeriod1Period1Warming up and Pre-reading1. Show an episode of the film “The Day After Tomorrow”.Warming up2. In the film we can feel the power of nature. Natural disasters are dangerous and can cause great damage to us.Can you think of other natural disasters?Typhoon SandstormFloodEarthquakeTornadoSnowstormTsunamiLandslideCycloneHailstormVolcanoHurricane The power of natureTyphoon/Cyclone/Hurricane TYPHOONSNOW SLIDEMUDFLOWVolcanoSandstormTORNADOFLOOD3. We can find how powerful nature is and how weak humans are compared with natural disasters. But we are not completely powerless. We can take measures to protect ourselves from powerful natural forces.Discussion: What measures should we take to protect ourselves from natural disasters?4. Volcano is one of these natural disasters. We should also do something to avoid its eruption or reduce its damage to us.What do you know about volcanoes?What kinds of volcanoes do you know?Active volcanoDormant volcanoExtinct volcanoHow is a volcano formed?The inside of the earth is so hot that the rocks have melted and become liquid.The melted rocks inside the earth try to get out of the earth just like boiling water getting out of a kettle(煮开水的壶）煮开水的壶）. In some places the outside of the earth is thin and weak so the hot melted rocks which we call lava(火山熔岩火山熔岩) push out. Thats called erupting volcano.HOW DOES A VOLCANO ERUPT?volcano-eruptionBoiling rock erupts from the crater; the lava flows slowly down the mountain. Magma chamberLavaCraterAsh cloud/volcanic ashNear the oceans.Where is the most possible place that a volcano may erupt?What are the damages caused by volcanoes?If we can predict the eruption of volcanoes, we can reduce its damage to us. So we need volcanologists to study volcanoes.Pre-reading Can you imagine climbing into a live volcano in order to take the temperature of the boiling rock inside?imaginedoing such dangerous work as part of your job ?Answer “yes” or “no” to these questions to find out if you would be suitable for this work.Do a quiz 1. Questions Yes NoDo you like working outside as well as inside?Do you enjoy traveling to unusual places?Do you enjoy taking risks? Questions Yes NoDo you dislike doing the same thing every day?Do you like adventure in your life?Are you interested in studying rocks and other things that make up the surface of the earth?If you answered “yes” to all these questions, then volcanology could be a good career for you.2. Guess: what kind of things a volcanologist might do. Please work with partners and write your guess down.Homework 1. 完成完成Workbook中中Talking部分的部分的Exercise3（Page69）Read the information beside the picture. How do you think you would feel during the cyclone and after it was over?2. Read articles about some famous volcanoes eruption.3. 完成完成Workbook P69的的Listening练习练习.