高一英语必修3 Unit4 warming up课件.ppt

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1、Unit4Astronomy:thescienceofthestarsHowmanyplanetsarethereintheSolarSystem?Howmuchdoyouknowabouttheuniverse?Whatarethey?ThePlanetisnamedaftertheRomangodofwar.It'sdistinctiverustcolorisred.Itssurfacefeaturesmanymountains,canyonsandevenpolaricecapsthatlookalot

2、likethosehereonEarth.Wearedoingsomeresearchtofindoutwhetherthereislifeformsonit.MarsSinceithasnoprotectiveatmosphere,thetemperatureonthesurfacerangesfromextremelyhotonthesidefacingtheSuntoextremelycoldonthesidethatfacesawayfromtheSun.Itistheclosestplanettot

3、heSun.MercuryItisnamedaftertheRomangoddessofloveandbeauty,butthesurfaceisaveryunpleasantplacefeaturingveryhightemperatures,windsthatblowhundredsofmilesperhourandanatmosphereofsulfuricacid.VenusIthasatleastsixty-onemoonsandfeaturestheGreatRedSpot,whichisahug

4、e"storm"thathasbeenobservedfromhereonEarthforoverthreehundredyears.Itisthelargestplanetinoursolarsystem.JupiterIthasafascinatingsystemofrings.Ithassomanymoonsthatitislikeaminiaturesolarsystem.SaturnItisoneofthegiantgasplanetsinthesolarsystem.Ithasaveryfaint

5、ringsystemthatwedidn'tknowexisteduntiltheplanetwasvisitedbytheVoyagerspacecraft.UranusItwasthelaststoptheVoyagermissionmadebeforeifleftoursolarsystem.Ithaswindsthatblowhundredsofmilesperhourandamoonthatfeatures"geysers"ofnitrogenthateruptandleavedarkmarkson

6、thesurface.NeptunePlutoissofarawaythattheSunisjustadimpointoflightthatlooksalotlikeanyotherstar.Itisthesmallestandmostmysteriousplanetinoursolarsystem.Ithasonemoon,Charon,thatisalmostasbigastheplanetitself.PlutoCOUNTRYNAMEDATEFLIGHTDURATIONUSSR12hours1961US

7、AAlanShepard196115minutesChinaYangLiwei200321hoursYuriGagarinShenzhouVspacecraftTostudyasubjectscientificallystepbystep:trytobeobjectivesetoutyourideatobetesteddesignanexperimenttotesttheideaanalysetheresultsdrawaconclusionSkillsneededtobeascientist:accurac

8、yalogicalapproachthoroughwritingoftheexperimentsosomeonelsecouldredotheexperimentfromyournotesbeabletodrawconclusionsfromtheevidenceandnotimposeconclusionsonthedata