Unit6Electricityeverywhere（Cross-curricularconnection）課件-滬教版英語(yǔ)七年級(jí)下冊(cè)

Unit6ElectricityeverywhereLesson7Cross-curricularconnection

Learningobjectives目錄頁(yè)標(biāo)題通過(guò)本課時(shí)學(xué)習(xí)，學(xué)生能夠：1.了解不可再生能源的缺點(diǎn)，尤其是對(duì)環(huán)境產(chǎn)生的危害。2.了解可再生能源的種類和不同國(guó)家使用可再生能源的情況。3.運(yùn)用所學(xué)知識(shí)談?wù)摽稍偕茉聪嚓P(guān)內(nèi)容。4.認(rèn)識(shí)到可再生能源的重要性，增強(qiáng)環(huán)保意識(shí)。

重點(diǎn)ReviewDoyourememberwhatpeopleusetoproduceelectricity?HydropowerWindpowerSolarpowerThefossilfuelThinkandchooseWhichisdifferentfromtheothers?HydropowerWindpowerSolarpowerThefossilfuelThinkandtalkWhyisthefossilfueldifferent?HydropowerWindpowerSolarpowerThefossilfuelrenewableenergyunrenewableenergycoaloilgasThinkandanswerWhataretheadvantagesanddisadvantagesofusingfossilfuels?Burningfossilfuelsreleasesharmfulgases,causingairpollutionandhealthproblems.TheyproduceCO?,agreenhousegasthatleadstoglobalwarming.Fossilfuelscanprovideenergywheneverweneedit.Unlikesolarorwindpower,theydon’tdependontheweather.Fossilfuelsreleasealotofenergywhentheyareburned,whichmakesthemveryefficientforgeneratingelectricity.Fossilfuelstakemillionsofyearstoform,sotheywilleventuallyrunout.Howtosolvetheseproblems?Userenewableenergytoreplacefossilfuels!ReadandmatchReadthetextandthenmatchtheparagraphs(A–E)withthepictures(1–5).EDCBAReadandcomplete

RenewableenergyThecountrythatusesitA

B

C

D

E

hydropowerwindenergysolarpowergeothermalenergybiofuelChinaBritainAustraliaIcelandTheUSAReadandanswerWhatisthebiggestdamintheworld?Around29hours.TheThreeGorgesDam.Howlongcanoneturnofthewindturbinebladespowerahouse?ReadandanswerHowmuchelectricitydothesolarpanelsonthesheepfarminAustraliaproduceeachyear?WhyisgeothermalenergycheapinIceland?BecauseIcelandhasmanyvolcanoesthatproducehotwaterandair,makinggeothermalenergyeasytouse.Theyproduceabout200millionhoursofelectricityayear.WatchandanswerHowdoestheThreeGorgesDamhelpproduceelectricity?WatchandanswerHowdoestheThreeGorgesDamhelpproduceelectricity??Thedamholdsbackalotofwater.Whenthewaterisreleased,itflowsdownwithforce.?Theflowingwaterpushesturbines,makingthemspin.?Thespinningturbinesturngeneratorstoproduceelectricity.?Theelectricitytravelsthroughwirestocities.BrainstormingWhataretheadvantagesofusingrenewableenergy?First,itissustainableandwillneverrunout,unlikecoaloroil.Second,itisgoodfortheenvironmentbecauseitdoesn’tpollutetheairlikefossilfuels.

Finally,usingrenewableenergycansavemoneyinthelongrunbecauseitbecomescheapertouseaftertheequipmentissetup.Third,itimprovespublichealthbyreducingharmfulairpollution,leadingtohealthierlives.TalkinpairsWhatkindsofrenewableenergyareusedinyourarea?Howdopeopleusethem?Whataretheadvantagesofthem？Whatkindsofrenewableenergyareusedinyourarea?Howdopeopleusetheminyourarea？......Whataretheadvantagesofusingthem?Summarytalkaboutrenewableenergywithclassmates.realisetheadvantagesofusingrenewableenergy.knowmorefactsaboutrenewableenergy.231Afterlearningthislesson