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Unit4Astronomy：thescienceofthestarsAstronomy:thescienceofthestarsUnit4HighSchoolObservatoryJupiterUranusNeptuneSaturnMercuryMarsEarthVenus水星金星地球火星木星土星天王星海王星Inoursolarsystemeightplanetscirclearoundthesun.1111MyVeryExcellentMotherJustSentUsNinePizzasHowtoremembertheorderoftheeightplanetsaroundthesun?EarthJupiterMarsMercuryNeptuneSaturnUranusVenusChineseLegendsPanguseparatestheskyfromtheearth.Legend:TheGoddessNuwamendedtheheavenandcreatedhumanbeingsfromtheclay(粘土).ReligiousBeliefsAccordingtoBible,Godcreatedtheworldinsevendays.Day1:GodcreatedDayandNight.Day2:Godcreatedsky.Day3:Godcreateddryland—theearth,andseas.Day4:Godcreatedtwogreatlights(thesun,themoon)andstars.Day5:Godcreatedlivingthingsintheairandsea.Day6:Godcreatedthelandanimalsandthefirstman.Day7:GodrestedandcalledthisdayHoly.Unit4HowLifeBeganontheEarthMainideaofeachparagrapha.Theimportanceofwaterforlifeb.Thedevelopmentofplantsandanimalsontheearthc.Theformationoftheearthd.Awidelyacceptedtheoryabouttheformationoftheuniversedcabe.ThearrivalofhumansandtheirimpactontheearthParagraph5:Paragraph1:Paragraph2:Paragraph3:Paragraph4:e1Insectsandamphibiansappeared.2Dinosaursappeared.3Theearthbecameasolidball.4Smallplantsgrewonthewater.5Reptilesappeared.6Plantsbegantogrowondryland.7.Theearthwasacloudofdust.8Waterappearedontheearth.9Shellfishandotherfishappeared.10Theuniversebeganwitha“BigBang”.11Cleveranimalswithhandsandfeetappeared.12Mammalsappeared.ReadingComprehensionIIIAnswer:107384961521211WhileWhile-reading-readingThinkaboutwhatyouhavereadandmakechoices.Whywastheearthdifferentfromotherplanets?AItproducedalotofheat.B.Thewaterremained.CWaterdisappeared.D.Itwastheoldestplanet.Whywaslifeabletodevelopontheearthbutnotonotherplanets?ATheearthhadasolidshape.B.Theearthdidnothaveharmfulgasesinitsatmosphere.CThewaterstayedontheearthbutnotonotherplanets.D.Theearthwasnottoohotandnottoocold.Whydidtheplantsgrowbeforeanimalscame?AAnimalsneededplantstoprotectthemfromthesun.BPlantsprovidedoxygenforanimalstobreathe.CAnimalscouldhidefromhuntersinforest.DItwaseasierforplantstogrow.Whatproblemiscausedbyhumanbeings?ATheyexisteverywhereontheearth.BTheycauseglobalwarming.CTheyfindnewmethodsofgrowingcrops.DTheyenjoyhuntingandfishing.DetailedReadingThedevelopmentoftheearthStage1:Thedevelopmentoftheearth(1)AftertheBigBang,whathappened?acloudofdustaviolentsolidglobeexplodedwithfireandrockproducedcarbon,nitrogen,watervapour&gases(2)Whathappenednext?(3)Whatdidthewatervapourandgasesform?theearth’satmosphereWaterappeared(4)Whatappearedontheearththen?(5)Whatdidthewaterform?oceansandseasThedevelopmentoflifeextremelysmallplantsFirstearlyshellfishStage1:ThedevelopmentoflifeinwaterallsortsoffishgreenplantsonlandinsectsonlandStage2:ThedevelopmentoflifeonlandNextamphibiansonlandandinthewaterGreenplantsgrewintoforestsLaterreptilesonlanddinosaursonland(1)Whatlifedevelopedafterforestsappeared?Afterthatmammalsonland(2)Whatlifedevelopedafterdinosaurs?smallcleveranimals(3)Whatlifedevelopedaftermammals?Finallytrytotellyourfriend:Howlifebeganonearth1.smallplantsinwater2.shellfishandallsortsoffish3.greenplantsonland4.Insects(onland)5.amphibians(onlandandinwater)6.forests7.Reptiles(onland)8.Dinosaurs(onland)9.Mammals(onland)10.smallcleveranimalswithhandsandfeet11.humans1.BigBang2.acloudofdust3.Asolidglobe4.explodedwithfireandrock5.producethewatervapour,carbondioxide---atmosphereHowdidtheearthcomeintobeing?6.cooleddown7.waterappeared8.Dissolvedharmfulgases&acidAsastudent,whatlittlethingscanwedofortheearth?topreventtheearthfromgettinghotterandhottertoslowdowntheproblemgettingworse……Whetherlifewillcontinueontheearthdependsonhumanbeings.Onlyifwecarewillwehelp,onlyifwehelpshallallbesaved!Wehaveonlyoneearth!Weshouldtakecareoftheearth!