the-universe宇宙英语课件.pptx
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the-universe宇宙英语课件.pptx
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Thespace,TheSun,Theplanets,Moons,Daysandyears,1.TheSun,Earth,Solarsystem,WeliveonaplanetcalledEarth.,Thereare7otherplanetsthatgoaroundororbittheSuninoursolarsystem,Starcentre,Thesolarsystem,Itsmadeofveryhotgases,Giveusallournaturallightandheat,5billionyearsold,TheSunisthestaratthecentreofoursolarsystem,Itsabout5000000000yearsoldandabout145000000kmfromEarth,Ceres,Eris,Dwarfplanets,Smallerplanet,2.Theplanets,Theeightplanetsinoursolarsystemare:
Plutoisasmallerplanet,calledadwarfplanet.,Thereare2otherdwarfplanets:
Youcanuseasentencetohelpyouremembertheorderoftheplanetsfromthesun:
MichealsVeryExcitingMonster,Jorgut,MercuryVenusEarthMarsJupiterSometimesUnderstandNewspapers.SaturnUransNeptune,Ihavea,3.Moons,LikeaplanetOrbitthesunOrbitstheplanet,TheEarthsmoonisnottheonlymoonInoursolarsystem.,JupiterhasmoremoonsthanSaturn,Saturnhasmorethan60moons,TheEarthhasamoon,4.Daysandyears,Atdifferentspeeds,ThetimeittakesaplanettoorbittheSunisaPlanetaryyear,365.26days,OrbittheSunTurnaroundorspin,So,whenourpartofearthisfacingthesun,wehavedaytime.Whenitsdark,wehavenights,OrbittheSun,24hoursAbout10.5hoursLongestday,1day=243daysVenusEarth,But1dayonVenusislongerthanoneyearonVenusoneyearonVenus=225daysonEarth!
QUESTIONS,Howmanyplanetsarethereinthesolarsystem?
DoestheSunorbitEarth?
Howoldisthesun?
HowlongisadayonSaturn?
Whatsatthecentreofoursolarsystem?
WhichplanetisnearesttheSun?
Aretheremoremoonsorplanets?
Whichislonger:
adayoraplanetaryyearonVenus?
Thereare8planetsinthesolarsystem.No,itdoesnt.EarthorbitSun.Its5000000000yearsold.Itsabout10.5hours.TheSunisatthecentreofoursolarsystem.MercuryisnearesttheSun.Yes,thereare.Aday.,OVERBYE-BYEEmma,
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