最新新课标必修3-UNIT4-a-visit-to-the-moon-阅读课件教学讲义PPT课件.ppt

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1、新课标必修3-UNIT4-a-visit-to-the-moon-阅读课件Doyouwanttogotothemoon?Imaginewhatyouwillfeelwhenyouareinspace?Thepulloftheearth’sgravitywilldisappearwhenyouareinspace.Youwillbeweightless.Thegravityofthemoonisverylight.Youwillweighlessthanontheearth.1._____wasthefirstperso

2、nlandingonthemoon?A.ArmstrongB.YangliweiC.TomCruiseD.IssacNewton2.Whendidhelandonthemoon?A.1921B.1969C.1954D.19493.WhendidYangLiweigotothespace?A.Oct,2003B.Jan,2003C.Oct,2004D.Jan,2002ABAthefirstmaninspaceYuriGagarinThefirstmanonthemoonNeilArmstrongRussia1961U.S

3、.A.1969Doyouknowwhotheyare?ReadingAvisittothemoonChinaisplanningtolandonthemooninthenearfuture.Fastreading:TrueorFalseTheforceofofgravitywouldchangefourtimesontheirjourney.()2.Whentheywereonthemoon,theywouldnotfeelthegravitybecausetherewasnogravityonthemoon.()3.

4、Sincethegravityhaschanged,theirwalkdidn’tneedalotofpractice.()FFFDetailedreading:ReadPara2carefullyandunderline3sentencesthatshowthechangesofthegravity.asheleftinspaceonthemoon)thewaygravitychangedlefttheearthinspaceonthemoonItbecameverylight.Thegravitybecamever

5、ystrong.Thegravitydisappeared.ThethreewaysinwhichgravitychangedforLiYanpingandhowhisweightchanged.1.Thepullofgravitybecameverystrongshelefttheearth’satmosphere.Hisweightisnormal.2.Itdisappearedwhenhewasinspace.Heisweightless.3.Itwasverylightwhenhewasonthemoon.He

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

7、_____.WhenIwasinspace,it__________.We_______weightlesslyinthecabinandI_________.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedslotsofpractice_________gravitychanged.Thereturningoftheearthwasvery__________.Wewereamazedtowatchfire________ontheoutsideofthe

8、ship.gravitylesseneddisappearedfloatedcheeredupnowthatfrighteningbreakoutSummaryIfyouvisitthemoonwhatproblemswillyoumeetwith?Tosolvetheseproblems,whatthingswillyoutak