北師高一英語(yǔ)Clean-Machines課件

Unit9

Lesson35CleanMachinesIsyourcarclean?Whatismostimportant,ifyouliveinabigmoderncity?Manywouldanswerthecar.Youwillfinditdifficulttogotoworkormovewithoutacar.Moreandmorefamilieshavetheirowncarsinordertomakelifemoreconvenient,buthaveyoueverthoughtaboutwhatwouldhappentothecity?Themore…,thebetter…?Testyourknowledgeaboutcars.NameTypeStyleEnergyAdvantagesDisadvantagesAreyouinterestedincars?Ifso,howmanydifferenttypesofcarshaveyouseenoryouknowabout?Talkaboutcarsinyourgroup.Talkaboutthecaryouknowbestinyourgroup.ThefollowingquestionsandthekeywordsinExercise2areforyourreference.Whattypeofcarareyougoingtotalkabout?Whatdoyouthinkisthemostimportanttoacar?Whatarethemainkindsoffuelusedforcars?Isthefuelusedforthecaryouaretalkingaboutfavorable?What’stheproblemwiththefuelnow?Haveyougotanyideatoimproveacar?Speakitoutandshareitwithyourfriends.NameofthecarConditionsProblemsYourideaYourfriend’sideaLookatthefollowingpicture.What’sit?Haveyoueverheardofasolarcar?Readtheinterview.Maybeyouwillfindsomethingspecial.Asolarcar

Readtheinterviewtolearnaboutthesolarcarracingandremembertocollectinformation.Questions/ProblemsAnswers/Solutions1Whatisasolarcar?2Solarcarsarecleanandsafe.3WhendidMarieLoganbegintodesignsolarcars?4Six.Acarwhichusessun’senergyforpower.Whyarepeopleinterestedinsolarcars?Atuniversity.HowmanyraceshasMarieLogantakenpartin?Questions/ProblemsAnswers/Solutions5WheredidtheraceMarielikedbesttakeplace?6Itdidinfourdays7WhathasMariebeendoingrecently?8WhatelsehasMariebeendoing?9ItranacrossthewholeofAustraliafromNorthtoSouth.Howlongdidtheracetake?BuildinganewcarwithateamfromQueenslandUniversity.WritingabookaboutsolarcarsWhat’sthemainproblemwithsolarcars?Theyaretoosloworunreliable.Whatdoyouthinkofthesolarracingcar?Wouldyouliketohaveatrytodesignoneofyourown?Improveyourformerdesign.NameofyourcarTypeFormerdesign(Problem)Newdesign(Improvement)ReasonforimprovementDescribeyourdesignofanewcartoyourfriendsandlistentotheirsuggestions.NameOpinionSuggestionsGoodProblemHowtoReason

Ifyouarereallyinterestedinsolarcarracing,readmoreaboutsolarcarracing.ExtensiveReadingWhatisasolarcar?SolarCar

Asolarcarisalightweight,lowpowervehicledesignedandbuiltwithasinglepurposeinmind-racing(or"raycing",acombinationof"race"and"ray"fromthesun).SimilartoanIndyorFormulaOneracecars,solarcarsdonotrepresentapracticalmeansoftransportation.Theyhavelimitedseating(usuallyone,sometimestwopeople),theyhaveverylittlecargocapacity,andtheycanonlybedrivenduringtheday.Theydo,however,offeranexcellentopportunitytodevelopfuturetechnologiesthatcanbeappliedtopracticalapplications.SolarvehiclesrepresentingfivecollegeteamsleftCalState-SacramentoonTuesdaymorningatthestartofasix-day,670-mileracetoLosAngeles.TheyreachedStanfordviaVallejo,theSanFrancisco-OaklandBayBridge,afoggySanFranciscoandHighway280.Readtolearnaboutsolarcarracing.Knownasthe‘Brain-Sport’ofourtime,theWorldSolarChallengeentrantswilltraversemorethan3,000kmoftheAustraliancontinentfromtropicalDarwintobalmyAdelaide,incarspoweredbynothingmorethanthesunThe‘Challenge’,todesignandbuildacarcapableofcrossingAustraliaonthepowerofdaylight,comprehendsthemostinnovativeresearchanddevelopmentofalternativetransporttechnologies.TheWorldSolarChallengeattractsteamsandindividualsfromcorporationsanduniversitiesallovertheworldSolarcarraceswereledacrossthefirst-dayfinishlinebytheWesternWashingtonUniversity'sVikingXX,asleekcarunderaslantedarrayofsolarcellslikearoofofshinybluetile.TheViking,whichreachedStanfordwithanelapseddrivingtimeof4hours,27minutes,placedfifthinternationallyintheWorldSolarChallengeinAustralialastNovember.

Thecarsarepoweredbythesun,buttheraceitselfispoweredbytheorganizationanddedicationofcollegestudents.ItstartedwiththeStanfordSolarCarProject,aloosecollectionof40orsostudentswhohavesofarbuilttwosolarcarswithalittlefacultyadviceandalotofhardwork.GraduatestudentDaveCaditzspearheadedtheideaofaracethatwouldzig-zagacrossCaliforniaandinspirethepublic'sinterestinalternative-poweredvehicles.

The8thWorldSolarChallengewilldepartDarwinonSunday25September2005.ScrutineeringcommencesonThursday22September,andmostteamsspendatleastaweekinDarwinpreparingfordeparture.

TheWorldSolarChallengeisacelebrationofachievement,ofcourageandtheapplicationofscientificknowledgeinthefieldofsolartechnology.Thisistheadventureofyoungpeoplenotonlydreamingofasafer,smarter,greenerworld,butofskilledyoungenthusiastsworkingtomakeitareality.

TheAmericanSolarChallenge

TheAmericanSolarChallenge(ASC)isacompetitiontodesign,buildandraycesolar-poweredcarsinacross-countryevent.

In2005therewillbeaspecialeditionofASC,the2005NorthAmericanSolarChallenge.TeamswillcompeteinasolarvehicleraycefromUnitedStatesthroughCanada!

In1997,UniSA,SeatonHighSchool,Fremont-ElizabethCityHighandAnnesleyCollegeformedtheSouthAustralianSolarCarConsortium.TheaimoftheConsortiumwastohelpstudentsdesign,buildandracesolarcarsintheWorldSolarChallenge.AsolarcarracesdownthestreetintheWorldSolarChallenge.HeldeverytwoyearsinAustralia,theracebeganin1987andwastheworld'sfirstsolarcarraceTheHistoryofSolarCarRacing

HansTholstrupandLarryPerkinspioneeredsolarcarracingwhentheycompletedanepicSolarTrekfromPerthtoSydney(Australia)in1983.Whatfollowedwasaseriesofsolarcarracesdesignedtoincreasepublicawareness.

The1987AustralianWorldSolarChallengesaw23participantsinauguratethefirstsuchrace,followedbytheEuropeanTourdeSol,theAmericanTourdeSol,andtheSUNRAYCE.Somespectacularcorporateandcollegevehiclesadornedtheseearlyracesandarepicturedbelow.HowtoDesignaSolarCarIfyouareinterestedinsolarcarracing,pleasereadthefollowingtolearnhowtodesignasolarcar.DesigningandBuildingaSolarCarReadandlearnhowtomakeasolarcar.Designingandbuildingasolarcarisanenormousprojectthatcantakeuptotwoyearstocomplete.EnergyFlowforaSolarCarEnergyflowdiagramforasolarcarThesunlighthitsthecellsofthesolararray,whichproducesanelectricalcurrent.Theenergy(current)cantraveltothebatteriesforstorage,godirectlytothemotorcontroller,oracombinationofboth.Theenergysenttothecontrollerisusedtopowerthemotorthatturnsthewheelandmakesthecarmove.DriverControlsSolarcarsdohavesomeofthestandardfeaturesfoundinconventionalcars,suchasturnsignals(front&rear),brakelights,accelerator(gaspedal),rea