Unit 4 Topic 2 Section C 课件 1

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1、Unit4AmazingScienceTopic2I’mexcitedaboutthethingsthatwillbediscoveredinthefuture.SectionC课件1Besidestheearth,doyouknowotherplanets?SolarsystemMarsTheRedPlanetWhatdoyouknowaboutMars?Whatdoesitlooklike?=Whatisitlike?(事物)CompareMarswiththeearth:size,color,gravity,te

2、mperature,theoxygenWhatdoyouknowaboutMars?Whatdoesitlooklike?MarsisthefourthplanetfromthesuninoursolarsystemandisnamedafterMars,theRomangodofwar.Itsdiameteris53%aswideasthatoftheearth.Marsgoesaroundthesunatadistanceofabout228millionkilometers.Youcantellwhichplan

3、etisMarsbecauseitisbrightredinthenightsky.Itlookslikearedandorangeball.It’sverybeautiful.Butduringspringandsummer,strongstormscancoverthewholesurfaceofMars.ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.Soaperson(whoweighs90kilosonearth)weigh

4、sonly36kilosonMars.ThetemperatureonMarsisbetween-138°Cand28°C.Theairhasonly0.13%oxygen.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosettoeachother.ScientistsarestillsearchingformoreinformationaboutMars.1aReadandanswerthequestion

5、s:1.WhatisMarsnamedafter?It’snamedaftertheRomangodofwar.2.HowfarisMarsfromthesun?Atadistanceofabout228millionkilometers.3.Howmuchdoesapersonweighifheweighs150kilosonearth?60kilos.4.CanhumanbeingsliveonMars?No,because…1bworkaloneRead1aagainandwritedowntheinformat

6、ionaboutMars.Diameter:___________________________________Color:______________________________________Shape:_____________________________________Climate:______________________________________________________________________________________________________________

7、____________Gravity:____________________________________Distancefromthesun:________________________53%aswideasthatoftheearthbrightredinthenightskyaredandorangeballabouttwo-fifthsasstrongasitisonearthabout228millionkilometersDuringspringandsummer,strongstormscanc

8、overthewholesurfaceofMars.ThetemperatureonMarsisbetween–138and28.Keypoints1.atadistanceof+数字“相隔…远”at+价格：Theysellthericeat5Yuanperkilo.at+速度Hedroveataspeedof90kilomete