牛津譯林版（2019）選擇性必修 第三冊Unit 2 Out of this world Project 課件

Unit2Outofthisworld

1.theSun

2.Mercury/?m??kj?ri/3.Venus/'vi?n?s/4.theEarth5.Mars6.Jupiter/?d?u?p?t?(r)/7.Saturn/?s?t??n/8.Uranus/'j??r?n?s/9.Neptune/?neptju?n/Marsisaratherharshenvironment

nooxygeninitsatmosphereverycoldradiationtheatmosphericpressureinaprotectedenvironmentwithsourceofoxygenSampleA:CanhumansliveonMars?B:It’shardtodoit,becauseMarsisaratherharshenvironment.A:Wouldyoupleasetellmemoreaboutit?B:First,Marshasessentiallynooxygeninitsatmosphere.TheatmosphereofMarscouldnotsupportlife.B:That’sterrible.M:Secondly,itisverycoldonMars.A:SowewoulddieoffreezingonMars.B:Youarerightifunprotected.Thirdly,radiation.A:Weneedprotectionagainstradiationtobehealthyandnotgetcancer.B:There’remanyotherproblems.Forexample,theatmosphericpressureisnotsuitableforhumansjustlike

whenyougodeepintheoceanthepressureincreases.A:Oh,it’shopeless!B:However,humanscouldliveinaprotectedenvironmentwithsourceofoxygen.A:IhearthereiscurrentlyamissionplannedbyaprivatecompanytosendhumanstopermanentlyliveonMars!B:Timewilltellifthey’resuccessful.

SampleUnderstandingtheprofileHowtoliveonMarsWhatproblemsarementionedintheprofile?Andhowcanwesolvethem?RadiationDuststormsWeshouldfindpermanentshelterthatofferslong-termprotection,suchasbuildingaspecialstructurenearMars’freezingnorthpole.Wecouldalsotakeadvantageofthesolarenergyorconstructnuclearpowerstationstosatisfyourenergyneeds.ProblemsSolutions

…

…WaterFood

Watermining.

CreatewaterwithoxygenandhydrogenshippedfromtheEarth.Growfoodusingchemicalslikecarbon,nitrogen,oxygen,hydrogen,etc.WhatifwelivedontheMoon?Wouldn’titbecooltobeabletoliveandworkontheMoon?Let’ssaywedowanttoliveandworkontheMoon.Buttherearetwobasicneedsthatwewouldhavetotakecareof:waterandfood.WhatifwelivedontheMoon?Waterisatrickyproblem.There’snowsomeevidencethatwatericemightbepresentatboththenorthandsouthlunarpoles.Ifso,waterminingmightbepossible.Ifwaterisn’tavailableontheMoon,itmustbeimportedfromtheEarth.OnewaytodothatwouldbetoshipliquidhydrogenfromEarthtotheMoon,andthenreactitwithoxygenfromtheMoon’ssoiltocreatewater.Asaside-benefit,thehydrogencanreactwithoxygeninafuelcelltocreateelectricityasitcreateswater.WhatifwelivedontheMoon?Foodisalsoaproblem.ThefirstthoughtthatanyoneontheEarthwouldhaveis

togrowthefoodontheMoon,usingchemicalslikecarbon,nitrogen,oxygen,hydrogen,potassium,phosphorous,andsoon.Togrowatonofwheat,you’llhavetoimportallthechemicalsnotreadilyavailableontheMoon.Oncethefirstcropisin,andaslongasthecolony’spopulationisstable,thenthechemicalscanbereusedinanaturalcycle.Theplantgrows,apersoneatsit,andthepersonexcretesitassolidwaste,liquidwasteandcarbondioxideinthebreath.Thesewasteproductsthennourishthenextbatchofplants.Definitions1.n.afinepowderthatconsistsofverysmallpiecesofsand,earth,etc.2.v.toremovedirtfromsb/sth/yourselfwithyourhandsorabrushVocabularyweb

(1)

dust

dusty

adj.

dustbinn.

dustern.;dustn.Definitions1.n.thefactofhavingaplacetoliveorstay,consideredasabasichumanneed2.v.toprotectsb/sth3.v.tostayinaplacethatprotectsyoufromtheweatherorfromdangerVocabularyweb

(2)

shelter

shelteredadj.

shelterv.Definitions1.adj.happeningallthetimeorrepeatedly2.adj.thatdoesnotchangeVocabularyweb

(3)

constant

constancyn.

constantlyadv.

constantadj.

Definitionsadj.using,producingorresultingfromnuclearenergy2.

adj.connectedwithweaponsthatusenuclearenergyVocabularyweb

(4)nuclearanuclearpowerstation(1)Thecrisisstruckthecoreoftheglobalsystem,leavingnocountry________fromitsconsequences.sheltereddust,constant,nuclear,shelter(2)

Historyismuchmorethanthestudyof________oldobjectsandeventslongpast．dusty(3)

Shethought________aboutherfamily;shemightneverknow