《新视野大学英语第二版第三册第六单元课件》由会员分享，可在线阅读，更多相关《新视野大学英语第二版第三册第六单元课件（70页珍藏版）》请在金锄头文库上搜索。
1、3 6 How to Prepare for Earthquakes 3 6 fire What kind of disasters do you know? 3 6 typhoon / Hurricane 3 6 snow slide 3 6 tornado 3 6 sandstorm 3 6 mudflow 3 6 drought 3 6 volcano eruption 3 6 flood 3 6 Tsunami 3 6 Watch and Discuss 3 6 Earthquake is a sudden movement of the Earths surface, sometim
2、es causing great damage. 3 6 The Origin of Earthquake: Earthquakes happen because the outer layer of the earth (the crust) is slowly being deformed by stresses that are placed on the crust. These stresses build up along locked portions of the crust where earthquake faults(断层) are. Eventually the str
3、esses become too great for one of the faults to withstand(承受), and the crust suddenly moves, like a spring that has been wound too tightly. This sudden movement of the ground is called an earthquake. 3 6 Whats earthquake An earthquake is the result of a sudden release of energy in the Earths crust t
4、hat creates seismic waves（地震波）. Sometimes an earthquake has foreshocks. There are smaller earthquakes that happen in the same place as the larger earthquake that follows. Scientists cant tell that an earthquake is a foreshock until the larger earthquake happens. 1 2 3 3 6 What do you think may happe
5、n before an earthquake? 1) The weather will become worse than usual. There will be strong wind, heavy rain and bright light in the sky and so on. 2) Animals will become nervous. e.g. mice will run about; fish jump out of ponds; cows, pigs, horses and dogs will be upset. 3) Water in rivers and wells
6、will rises and falls. 4) We will see cracks in the wells and the smelly gas will come out of the cracks. Signs 3 6 What shall we do if an earthquake happens? Discussion 3 6 What can we do when the earthquake happens Run Hold on Calm Stop CarefulIf you are outdoors If you are in the car If you are ne
7、ar the door If you cant run out of the house in time During the earthquake 3 6 drop onto the ground keep away from the power lines Ways on self-rescue 3 6 keep away from the signs keep away from the buildings 3 6 hide under the furniture drop onto the ground hold onto the furniture hide in the corne
8、r of the house 3 6 Two Reactions Wrong Be panic Run aimlessly Fear with ones eyes open wide To jump from a building To take an elevator To run in bare feet Right Keep calm To take shelter where you are To go to narrow rooms for protection To shield ones eyes from the fragments of broken glass To tak
9、e the stairs To cut off the electricity To wear a heavy or comfortable boots 3 6 earthquake hazard（地震危害性） uproot trees and knock off buildings make the rivers change their courses make the transportation system break down cause power line failures cause loss of life and property trigger landslides,f
10、looding and tsunamis may cause infective deseases 3 6 1 1 Text Study Idea Sharing Notes to the Text Writing Words and Expressions 3 6 Summary Understanding Reproduction Structure Analysis 3 6 A. The way to develop the text: I. Structure Analysis General Statements + Details + Conclusion The text tel
11、ls mainly about how to prepare for an earthquake, namely, the prediction, prevention and preparation of earthquakes. Text StudyStructure Analysis 3 6 General Statement 1 + Details 1 2 3-6 7 Ways of DevelopmentParagraphs Text StudyStructure Analysis Conclusion General Statement 2 + Details General St
12、atement 3 + Details 3 6 B. Complete the Main Ideas Para. 1 To _ when an earthquake is going to happen. Para. 2 To _ the great destruction of property caused by earthquakes. Para. 36 To _ the possibility of a great earthquake. Para. 7 Even if prediction becomes possible, people still have to do their
13、 best to prevent disasters by _ and by _ _. predict prevent prepare for improving building structures personally prepared being Text StudyStructure Analysis 3 6 1) Wire the earth and sea to detect movements. 2) Watch animals and plants for warning signings of earthquakes. 3) The amount of radon waxe
14、s before an earthquake. 1. How can we know about warning signs of earthquakes? Para. 1Para. 1 II. Understanding Text StudyUnderstanding TipsTips 3 6 2. What animals show what signs of earthquakes? Para. 1Para. 1 Text StudyUnderstanding I can predict earthquakes! Can seismologists do that? 3 6 1) hen
15、scages 2) snakesfreeze to death 3) dogsbark a lot 4) fishsurface 5) birdsnoisy fly unusually Text StudyUnderstanding TipsTips MoreMore 3 6 Some advance warnings of an impending earthquake. MoreMore Text StudyUnderstanding 3 6 By falling buildings. Para. 2Para. 2 Text StudyUnderstanding TipsTips 3. H
16、ow are most of the people killed in an earthquake? TipTip 3 6 1) Steel joint/an I-joint 2) Equally strong columns resist the storm severe tests another attack hard wear pressure withstand 顶住暴风雨 经得起严峻的考验 抵挡住又一次进攻 耐穿 顶得住压力 Words and ExpressionsWord Using CollocationCollocation 3 6 3. joint n. a place where two parts of sth. are joined t
