高中英語 Unit4 Earthquakes Warming up課件 新人教版必修1.ppt
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Unit4 Warmingup Earthquakes Teachingaims 1 Trainthestudents listeningability 2 Trainthestudents listeningability 3 Trainthestudents abilitytousetheInternettosearchforsomeusefulinformation 4 Trainthestudents abilitytocooperatewithothers Importantpoints Trainthestudents speakingabilitybydescribing talkinganddiscussion Difficultpoints Trainthestudents listeningability Howmuchdoyouknowaboutanearthquake Manypeopledied Peoplelosttheirhomes Manythingsweredestroyed 大家一起來欣賞一首為汶川地震創(chuàng)作的歌曲 直到永遠 TheUnitedStates SanFrancisco Whydoearthquakeshappen Scientistsexplainthattheoutsideoftheearthismadeofanumberofdifferentplates AtSanFranciscothePacificplatewhichismovingtowardsthenorthwestmeetstheNorthAmericanplate ThePacificPlateismovingveryslowly at5 3centimetersayear Sometimesthesetwoplatesstopanddonotmoveforyears Thensuddenly theyjumpandanearthquakeisfelt Asaresultofthemovementoftheseplates westAmericaneartheseahasalwaysbeenabadplaceforearthquakes Whenthe1906earthquakehappened thepacificplatejumped5 6metrestothenorth Pacificplate Americanplate Eurasianplate Indianplate Africanplate Antarcticplate SanFrancisco Pacificplate Americanplate SanFrancisco Tangshan Hebei July28th 1976 Roadsgothugecracks Steamburstfromholesorwellsintheground Waterpipesweredestroyed Housesfelldown Brickbuildingsweredestroyed Therailwaytracksbecameuselesspiecesofsteel Peoplediedorwereinjured Familieswerekilledandmanychildrenwereleftwithoutparents Inafewseconds alargecitylayinruins Everythingwasdestroyed Itseemstheworldwasatanend Naturaldisastersoccurthroughouttheworld andChinahasaparticularproblemwithearthquakes Tangshanearthquakein1976isacaseinpoint Soitisespeciallyimportanttotakestepstoreducethedamagecausedbyquakes thepersonwhostudiesquakes themachinetorecordseismicwaves theinventorofthe1stseismology Seismologist Seismometer ZhangHenginHanDynasty thestudyofQuakerecordings Seismology Talkaboutabigearthquakethathappenedintheworldwithyourpartner Learnthenewwordsandphrasesfortheunit HOMEWORK
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