【课件】Unit+4Reading+and+thinking人教版（2019）必修第一册.pptx

Welcome to our classThe Violence of NatureNatrual disasterPre reading How many kinds of the Violence of nature exist on our planet?There are many kinds of natural disasters!FloodTsunamiSandstormTornadoEarthquakeEarthequakes Around the PacificWhile ReadingTrytodividethewholetext,thengivethe general idea ofeachpart.Earthquakes Around the Pacific1.2.3.Brief introduction of earthquakes aroundthe pacificThe earthquake of Hua County in Shaanxi ProvinceThe California earthquakeThe worst earthquake everWhich province is Hua County in?Shaanxi ProvinceWhat percentage of the population were killed?Is this the worst earthquake that has ever happened in U.S.?The fires lasted for 3 days.Do you know why the earth-quake happened in San Francisco?San Adreas FaultRelative motionFaultthe separation of an object or material into two,or more,pieces under the action of stress.Ingeology,afaultis a fracture.Worlds platePlate boundaryThree types of plate boundaryCultural LinksDo you want to know more about quake?EarthAmagnitude4.8earthquakeoccurredat10:30AMChinaStandardTimeatepicenterinSichuanprovince,whichhitLiCountyonFriday,April11th2014.Therewerenoimmediatereportsofmajordamageorinjuries.TheearthquakewasalsostronglyfeltinChengdu.Earthquake in Li County Li county in Sichuan Province11th April 2014Where were u that time?At3:34amlocaltime,adestructivemagnitude8.8earthquakestruckChile,oneofthestrongestearthquakeseverrecorded.AccordingtoChileanauthorities,over400peoplearenowknowntohavebeenkilled.TheearthquakealsotriggeredaTsunamiwhichisrightnowspreadacrossthePacificOcean.Earthquake in ChileChile Earthquake2th April 2014(BJT)Was it the strongest earthquake in the history of Chile?Yes8.8EarthquakehappenedWHYLi CountyLongmen FaultPlate BoundaryLi CountyChileDiscussionWhat have you learnt about the EARTHQUAKE?Protect our nature,build our future.SeanJoeThank you!。