人教版unit4 A visit to the moonppt课件

.,UsingLanguage&ReadingTask,秦玉玲,.,Changeslegend,Warmingup,.,Avisittothemoon,Thenaturalforcethatcausesanobjecttomovetowardthecentreoftheearth.,Gravity,Whythemoongoesaroundtheearth?,.,IsaacNewton,AlbertEinstein,StephenHawking,Gravity,.,Avisittothemoon,.,Fastreading,LastmonthImadea_intospaceby_withmyfriend,an_.Ilearnedmuchmoreabout_.,Sumupthemainideaofthetext.,trip,spaceship,astronomer,gravity,.,Carefulreading,Leavingtheearthforthemoon,Q1:Howmanytimeswouldtheforceofgravitychangeonourjourney?Whichchangewouldbethemostpowerful?,.,Onthemoon,Thechangeofgravity,Inspace,Verystrong,Veryheavy,Disappeared,Floatedweightlessly,Verylight,Themasswillbeless,Leavetheearth,.,Walkingonthemoon,Q2:WhathappenedtomewhenItriedtostepforward?Whydidwalkingneedpractice?,Iwascarriedtwiceasfarasontheearthandfellover.Becausethegravitychanged.,.,Returningtotheearth,Q3：Whatwasmyfeelingwhilereturning?Usesomeadjectives(形容词）todescribeit.,frightened,amazed,exhausted,excited,Ifelt,.,LastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldtheforceofg_wouldchangethreetimesonourjourney.Thenwetookoff.Aswelefttheearth,Ibecameveryh_.Graduallytheweightl_.WhenIwasinspace,itd_.Wef_weightlesslyinthecabinandIc_.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedslotsofpracticen_gravitychanged.Thereturningoftheearthwasveryf_.Wewereamazedtowatchfireb_ontheoutsideoftheship.,gravity,heavy,lessened,disappeared,floated,cheeredup,nowthat,frightening,breakout,Summary,IfyoucanvisitthemoonWhatproblemswillyoumeetwith?Tosolvetheseproblems,whatthingswillyoutake?,(Pleasetakedownsomenoteswhilediscussing,afterdiscussion,pleasereportit.),Discussion,.,Example:IfIhadthechancetovisitedthemoon,Imighttake.andImighthaveproblemsasfollow:Thefirstoneis.Because.Tosolvethisproblem,Iwouldtakewithme.Thesecondoneis,.,Howtocoolyou,Youmighthave5mainproblems:,Howtobreathe,problems,Whattoeat,Whattodress,Howtotravel,.,.,.,.,Howtocoolyou,Youmighthave5mainproblems:,Howtobreathe,problems,Whattoeat,Whattodress,spacesuit,oxygentanks,spacefood,thingsneededonthemoon,Ifyoufollowthisadvice,Ithinkyouwillhaveagoodtimeonthemoon.,water,Howtotravel,spacebuggy,.,Homework1.SurfontheIn