Unit4 A visit to the moon参考课件.ppt

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1、Unit4Astronomy：thescienceofthestarsAVisittotheMoonStep 1 CompetitionStep 2 Fast-readingStep 3 Detail readingStep 5 Discussion and speakingStep 6 HomeworkStep 4 SummaryAquizonastronomyAquizonastronomyAcompetitiononastronomyStep 1.The Solar systemPart1:TrueorFalse1.Theearthmovesaroundthesun.TFFFT2.Itt

2、akesthemoononedaytomovearoundtheearth.3.Earthistheonlyplanetmovingaroundthesun.4.Thereisatmosphereonthemoon.5.Venusisthehottestplanetinsolarsystem.onemonth8planetsnoPart2:Multiplechoice:1._isthenearestplanetfromthesun?A.VenusBMarsC.MercuryD.UranusC2._isthebiggestplanetinthesolarsystem?A.MarsB.PlutoC

3、.EarthD.JupiterD3._wasthefirstpersonlandingonthemoon?A.ArmstrongB.YangliweiC.TomCruiseD.IssacNewton4.WhendidArmstronglandonthemoon?A.1921B.1969C.1954D.19495.WhendidYangLiweigotothespace?A.Oct,2003B.Jan,2003C.Oct,2004D.Jan,2002ABAReadthepassagequickly,andthenJudgethestatementstrueorfalse.1.Theforceof

4、gravitywouldchangefourtimesontheirjourney.()2.Whentheywereonthemoon,theywouldnotfeelthegravitybecausetherewasnogravityonthemoon.()3.Sincethegravityhaschanged,theirwalkdidntneedalotofpractice.()FFFStep2Fastreading:three3timesTheforceofgravitychange1change _asheleft2change _whenhewasinspace3change _wh

5、enhewasonthemoonverystrongdisappearedverylightReadPara2carefullyandunderline3sentencesthatareaboutthechangesoftheforceofthegravity.(asheleft,inspace,onthemoon)Step3DetailreadingReadPara3andfillintheblanks.Whenwegotthere,Iwantedto_immediately.“Comeon,”Isaid.“ifyouareright,my_willbe_ontheearthbecauset

6、hemoonissmallerandIwill_movemore_.Imightevengrow_ifIstayhere_”exploreweightlessthanbeabletofreelytallerlongenoughReadPara.4andanswer:Wastheirreturningpainful?Whathappenedtothespaceship?Yes.Firebrokeoutontheoutsideofthespaceship.Summary:LastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldthefor

7、ceofg_wouldchangethreetimesonourjourney.Thenwetookoff.Aswelefttheearth,Ibecameveryh_graduallytheweightl_.WhenIwasinspace,itd_.Wef_weightlesslyinthecabinandIc_.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedslotsofpracticen_gravitychanged.Thereturningoftheearthwasveryf_.Wewereamazedtowatchfir

8、eb_ontheoutsideoftheship.ravityeavyessenedisappearedloatedheeredupowthatrighteningreakoutStep4IfyouwereYangLiwei1.Whatproblemswillyoumeetwith?2.Tosolvetheseproblems,whatthingswillyoutake?Step5DiscussionandspeakingShenzhou5HowtocoolyouYoumighthavetheseproblems:HowtobreatheproblemsWhattoeatWhattodressspacesuitoxygentanksspacefoodthingsneededonthemoonwaterExample:IfIvisitthemoon,Imightmeetsomeproblems:ThefirstoneisBecauseTosolvethisproblem,Iwouldtakewithme.ThesecondoneisHomeworkWriteapassageexplainingthreeproblemsyoumightmeetonthemoonandhowyouwillsolveit.Step6