講課教師：劉懷勤單位：渦陽二中第1頁第1頁EarthquakesLesson26Book1制作：劉懷勤第2頁第2頁

Theearthisalittleblueplanet.Therealwayshappensomedisasters(災(zāi)禍)suchasfloods,drought,volcanoes(火山),hurricane（颶風(fēng)）,desert（漠化）andearthquakes…

Background第3頁第3頁NATURALDISASTERDroughtorDesertFloodSeawaveHurricaneFireVolcano第4頁第4頁Tangshan,HebeiJuly28th,1976第5頁第5頁240,000Victimsoftheearthquake:第6頁第6頁?TheUnitedStatesSanFranciscoNewYork第7頁第7頁Viewsofthe1906SanFranciscoEarthquakeandFire第8頁第8頁5:13a.m.April18th,1906第9頁第9頁seenfromaferryboatinthebayTheGreatFire第10頁第10頁firearoundtheCallBuilding第11頁第11頁thedestroyedchurch第12頁第12頁TheArmylaterprovidedtentsforrefugees.poorly-builthouses第13頁第13頁ruinedhomesandpavement第14頁第14頁250,000people losttheirhomes700peoplelosttheirlives第15頁第15頁Alargepartofthecitywasdestroyed.第16頁第16頁Alargenumberofbuildingswereburnt.第17頁第17頁fellontotheonebelow第18頁第18頁Listeningtothetapeofthetext

第19頁第19頁FillintheformTimeHomesDeathLoca-tionLossBiggest2nd.biggest5:134.181906Oct.17,1989250,000700100Inthecity50kmsoutof…Part,build-ings...aroad,buildings,fires,elec-tricity第20頁第20頁1.InwhatpartoftheUnitedStatesisSanFrancisco?2.Inthespringof1906,whathappenedtothecityofSanFrancisco?3.Whathappenedagaininthecityinthefallof1989?Questions:4.Explainthereasonswhythereareearthquakes.第21頁第21頁

At5:13onthemorningofApril18th,1906,thecityofSanFranciscowasshakenbyaterribleearthquake.Agreatpartofcitywasdestroyedandalargenumberofbuildingswereburnt.Thenumberofpeoplewholosthomesreachedasmanyas250,000.About700peoplediedintheearthquakeandthefires.第22頁第22頁P(yáng)aragraph2

AnotherearthquakeshookSanFranciscoonOctober17th,1989.ItwasAmerica’ssecondstrongestearthquakeandabout100peoplewerekilled.Ithappenedintheeveningaspeopleweretravelinghome.Awideandbusyroadwhichwasbuiltlikeabridgeoveranotherroadfellontotheonebelow.Manypeoplewerekilledintheircars,butafewluckyoneswerenothurt.Luckilythe1989earthquakedidnothappeninthecenteroftownbutabout50kilometersaway.Inonepartoftownagreatmanybuildingsweredestroyed.Thesebuildingswereover50yearsold,sotheywerenotstrongenough.Therewerealotoffiresalloverthecity.Theelectricitywascutoffforseveraldaystoo.第23頁第23頁Whydoearthquakeshappen?Scientistsexplainthattheoutsideoftheearthismadeofanumberofdifferentplates.AtSanFranciscothePacificplatewhichismovingtowardsthenorthwestmeetstheNorthAmericanplate.ThePacificPlateismovingveryslowly—at5.3centimetersayear.Sometimesthesetwoplatesstopanddonotmoveforyears.ThenSuddenly,theyjumpandanearthquakeisfelt.Asaresultofthemovementoftheseplates,westAmericaneartheseahasalwaysbeenabadplaceforearthquakes.Whenthe1906earthquakehappened,thePacificplatejumped5-6meterstothenorth.第24頁第24頁FillintheformTimeHomesDeathLoca-tionLossBiggest2nd.biggest5:134.181906Oct.17,1989250,000700100Inthecity50kmsoutof…Part,build-ings...aroad,buildings,fires,elec-tricity第25頁第25頁1.InwhatpartoftheUnitedStatesisSanFrancisco?2.Inthespringof1906,whathappenedtothecityofSanFrancisco?3.Whathappenedagaininthecityinthefallof1989?Questions:4.Explainthereasonswhythereareearthquakes.第26頁第26頁TRUE

OR

FALSE1.AterribleearthquakehitSanFranciscoontheeveningofApril18,1906.（）2.Alargenumberofbuildingswereburntandabout700peoplewerekilled.（）3.The1989earthquakeinSanFranciscowasthestrongestoneinAmerica.（）4.Abridgefelldownontoanotherbridgebelow.（）FFFT5.The1989earthquakehappenedinthecenterofthetown,somanynewbuildingsweredestroyed.()F第27頁第27頁7.AtSanFranciscothePacificplatemovingnorthwestmeetstheSouthAmericanplate.()8.Thepacificplateismovingfast---at53kilometersayear.()6.Theelectricitywascutoffseveraldays.()TRUE

OR

FALSEFFT9.WestAmericaneartheseaisabadplaceforearthquakes.()T10.Whenthe1906earthquakehappened,thePacificplatejumped5-6meterstothenorth.()T第28頁第28頁P(yáng)aragraph1

At5:13onthemorningofApril18th,1906,thecityofSanFranciscowasshakenbyaterribleearthquake.Agreatpartofcitywasdestroyedandalargenumberofbuildingswereburnt.Thenumberofpeoplewholosthomesreachedasmanyas250,000.About700peoplediedintheearthquakeandthefires.第29頁第29頁MainIdeaDetailsIthappenedon________________________.______________________wasdestroyed.___________________________wereburnt.______________peoplelosttheirhomes._______________peopledied.themorningofApril18.AgreatpartofthecityThe1906EarthquakeAlargenumberofbuildings250,000

700Para.1Fillinform第30頁第30頁P(yáng)aragraph2AnotherearthquakeshookSanFranciscoonOctober17th,1989.ItwasAmerica’ssecondstrongestearthquakeandabout100peoplewerekilled.Ithappenedintheeveningaspeopleweretravelinghome.第31頁第31頁P(yáng)aragraph2Awideandbusyroadwhichwasbuiltlikeabridgeoveranotherroadfellontotheonebelow.第32頁第32頁P(yáng)aragraph2Manypeoplewerekilledintheircars,butafewluckyoneswerenothurt.第33頁第33頁P(yáng)aragraph3

Luckilythe1989earthquakedidnothappeninthecenteroftownbutabout50kilometersaway.Inonepartoftownagreatmanybuildingsweredestroyed.第34頁第34頁P(yáng)aragraph3

Thesebuildingswereover50yearsold,sotheywerenotstrongenough.第35頁第35頁P(yáng)aragraph3Therewerealotoffiresalloverthecity.Theelectricitywascutoffforseveraldaystoo.第36頁第36頁MainIdeaDetailsIthappened_____________________________.ItwasAmerica’s_________________________.Manypeoplewere______intheir________.Buildings__________________andtherewerealotof_______alloverthecity.Theelectricity____________________________.ontheeveningofOct.17secondstrongestearthquakecarsweredestroyedwascutoffforseveraldaysThe1989EarthquakekilledPara.2-3firesFillinform第37頁第37頁Whydoearthquakeshappen?Scientistsexplainthattheoutsideoftheearthismadeofanumberofdifferentplates.AtSanFranciscothePacificplatewhichismovingtowardsthenorthwestmeetstheNorthAmericanplate.ThePacificPlateismovingveryslowly—at5.3centimetersayear.Paragraph

4第38頁第38頁P(yáng)aragraph

4PacificplateAmericanplateEurasianplate

IndianplateAfrican

plateAntarcticplate北第39頁第39頁AmericanPlate第40頁第40頁P(yáng)aragraph

4Pacificplate

↖AmericanplateSanFrancisco第41頁第41頁P(yáng)aragraph4Sometimesthesetwoplatesstopanddonotmoveforyears.ThenSuddenly,theyjumpandanearthquakeisfelt.Asaresultofthemovementoftheseplates,westAmericaneartheseahasalwaysbeenabadplaceforearthquakes.Whenthe1906earthquakehappened,thePacificplatejumped5-6meterstothenorth.ContinentOceanicplate★★第42頁第42頁MainIdeaDetailsTheoutsideoftheearthismadeof_______________.Twooftheearth’splateswhichjointogethersuddenly_____________.CausesofEarthquakessixdifferentplatesjumpPara.4Theend第43頁第43頁In1976,thestrongearthquakehappenedinTangshan.Millionsofpeople________homesandalarge__________ofbuildingsweredestroyed.lostnumber第44頁第44頁OnthemorningofSeptember21th,1999,anotherstron