八大行星介绍.ppt

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1、HowmanyplanetsarethereintheSolarSystem?Howmuchdoyouknowabouttheuniverse?Whatarethey?ThePlanetisnamedaftertheRomangodofwar.It'sdistinctiverustcolorisred.Itssurfacefeaturesmanymountains,canyonsandevenpolaricecapsthatlookalotlikethosehereonEarth.Wearedoingsomeresear

2、chtofindoutwhetherthereislifeformsonit.MarsSinceithasnoprotectiveatmosphere,thetemperatureonthesurfacerangesfromextremelyhotonthesidefacingtheSuntoextremelycoldonthesidethatfacesawayfromtheSun.ItistheclosestplanettotheSun.MercuryItisnamedaftertheRomangoddessoflov

3、eandbeauty,butthesurfaceisaveryunpleasantplacefeaturingveryhightemperatures,windsthatblowhundredsofmilesperhourandanatmosphereofsulfuricacid.VenusIthasatleastsixty-onemoonsandfeaturestheGreatRedSpot,whichisahuge"storm"thathasbeenobservedfromhereonEarthforoverthre

4、ehundredyears.Itisthelargestplanetinoursolarsystem.JupiterIthasafascinatingsystemofrings.Ithassomanymoonsthatitislikeaminiaturesolarsystem.SaturnItisoneofthegiantgasplanetsinthesolarsystem.Ithasaveryfaintringsystemthatwedidn'tknowexisteduntiltheplanetwasvisitedby

5、theVoyagerspacecraft.UranusItwasthelaststoptheVoyagermissionmadebeforeifleftoursolarsystem.Ithaswindsthatblowhundredsofmilesperhourandamoonthatfeatures"geysers"ofnitrogenthateruptandleavedarkmarksonthesurface.NeptunePlutoissofarawaythattheSunisjustadimpointofligh

6、tthatlooksalotlikeanyotherstar.Itisthesmallestandmostmysteriousplanetinoursolarsystem.Ithasonemoon,Charon,thatisalmostasbigastheplanetitself.Pluto