新课标必修3 UNIT4 a visit to the moon 阅读课件.ppt

《新课标必修3 UNIT4 a visit to the moon 阅读课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、UNIT4AvisittothemoonDoyouwanttogotothemoon?Imaginewhatyouwillfeelwhenyouareinspace?Thepulloftheearth’sgravitywilldisappearwhenyouareinspace.Youwillbeweightless.Thegravityofthemoonisverylight.Youwillweighlessthanontheearth.Thegravityonthemoonis1/6asstrongasitisonearth.Thismeansthatsomeonewhowe

2、ighs150lbs(磅)onEarthwouldweighonly25lbsonthemoon!Youmightthinkthatthiswouldmakewalkingmucheasier,butitisactuallyquitedifficultLaterintheApollo(阿波罗)(Moonlanding)mission,astronautsdiscoveredthatitwaseasiertohop(跳)thanitwastowalk.Spacewalk2..Ittakesthemoononedaytomovearoundtheearth.3.Theearthist

3、heonlyplanetmovingaroundthesun.TrueorFalseTheearthmovesaroundthesun.TFFF4.Thereisatmosphereonthemoon.1._____wasthefirstpersonlandingonthemoon?A.ArmstrongB.YangliweiC.TomCruiseD.IssacNewton2.Whendidhelandonthemoon?A.1921B.1969C.1954D.19493.WhendidYangLiweigotothespace?A.Oct,2003B.Jan,2003C.Oct

4、,2004D.Jan,2002ABAthefirstmaninspaceYuriGagarinThefirstmanonthemoonNeilArmstrongRussia1961U.S.A.1969Doyouknowwhotheyare?ReadingAvisittothemoonChinaisplanningtolandonthemooninthenearfuture.Fastreading:TrueorFalseTheforceofofgravitywouldchangefourtimesontheirjourney.()2.Whentheywereonthemoon,th

5、eywouldnotfeelthegravitybecausetherewasnogravityonthemoon.()3.Sincethegravityhaschanged,theirwalkdidn’tneedalotofpractice.()FFFDetailedreading:ReadPara2carefullyandunderline3sentencesthatshowthechangesofthegravity.asheleftinspaceonthemoon)thewaygravitychangedlefttheearthinspaceonthemoonItbeca

6、meverylight.Thegravitybecameverystrong.Thegravitydisappeared.ThethreewaysinwhichgravitychangedforLiYanpingandhowhisweightchanged.1.Thepullofgravitybecameverystrongshelefttheearth’satmosphere.Hisweightisnormal.2.Itdisappearedwhenhewasinspace.Heisweightless.3.Itwasverylightwhenhewasonthemoon.He

7、weighslessthanonearth.Wastheirreturningpainful?Whathappenedtothespaceship?Yes.Firebrokeoutontheoutsideofthespaceship.Q&ALastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldtheforceof______wouldchangethreetimesonourjourney.Thenwetookoff.