人教版英语选择性必修二Unit 1 Period 4 Using langauge 1 Listening (课件)

Period4Usinglanguage1ListeningandspeakingTalkaboutscientificexperiencesUnit1ScienceandscientistsPredictbyusingpicturesOnewaytogetmoreoutofyourlisteningistopredictwhatyouwillhear.Usingthepicturesprovidedandtheknowledgeyoualreadyhave,youcanguessthekindsofinformationyoushouldlistenfor.Attimes,youmayevenbeabletoguessexactlywhatwillbetalkedabout.Thiswillhelpyoufocusbetterwhenlistening,makingyourlisteningmoreeffective.LearningtipAIthinkthedishinthisexhibitionisrelatedtosound.Maybetheboyiswhisperingintothesmallercircleandthedishcanmakehisvoicelouder.Thislookslikeapianoyouplaywithyourfeet.Maybeitshowshowsoundworks.CI'mnotsurewhatthisoneshows,butitmustbeaboutlightoreyesight.DItisahallofmirrors.Maybeithastodowiththeprinciplesofreflection.EThisisprobablyanexperimentinvolvingthecompositionoflight.

Thephotosabovearerelatedtotheconversationyouwillhear.Usingthephotos,trytopredicttheanswerstothefollowingquestions.1.Wherearethepeopleintheconversationgoingtogo?2.Whatkindofplaceisit,andwhatdoesitfocuson?3.Whatkindsofthingscanyoudothere?

1Wherearethepeopleintheconversationgoingtogo?

Theyaregoingtoasciencemuseum.2.Whatkindofplaceisit,andwhatdoesitfocuson?

Itisasciencemuseumthatfocusesonlettingvisitorsexperiencesciencethroughinteractivelearningexhibitions.3.Whatkindsofthingscanyoudothere?Youcanprobablytrydifferentactivitiestolearnaboutsound,light,reflection,andsoon.Forexample,youcangotoaroomwithmanymirrorsfacingeachothersoitlooksliketherearemanycopiesofyou!Oryoucanplaywithabigpianoonthefloor.3ListentotheconversationandseeifyouranswersforActivity2arecorrect.Thenwritedowntheletters(A-E)forthephotosintheorderthatyouhearthemdescribed.

1_________________2________________3.________________

4________________5_________________4.Listenagainandcompletethedescriptionsofthephotosabove.

PhotoA:Agiantdish;whenyouspeakintoit,it_________________thesoundbackand_____________.Youcanuseittospeakina_____________tosomeone17metersaway,PhotoB:Agiant____________.thatyoucanuseyourfeettoplay.Insteadofplayingthesoundsofapiano,itplaysthevoicesof________________.PhotoC:Youlookatabluescreenforawhile,andthensuddenlyyoucansee________________movingaroundonit.Theseareour_______________________PhotoD:A______________________whereyoucanseeyourselfreflectedthousandsoftimes.PhotoE:Youstandinfrontof_______________anditcastsdifferentshadowsofyou,in________________________therainbow.reflectsmakesitlouderwhisperpianokeyboardclassicalsingerstinybrightlightsownbloodcellshallofmirrorsawhitelighteverycolorof

1.TheconversationisabouttheCityofScienceandIndustry,amuseuminParis.Wouldyouliketogotothismuseum?Whyorwhynot?Yes.Icanlearnalotaboutscienceanditcanbroadenmyhorizons.2.ArethereanymuseumslikethisinChina?Whatotherinterestingmuseumsarethere?Yes.Thereareotherinterestingmuseumssuchasartmuseumormuseumaboutancienttreasure.Makeashortpresentationtotheclassaboutyourchoice.Usetheexampleandusefulphrasesbelowtohelpyou.EXAMPLEToday,Iwanttotalktoyouaboutaverystrangephenomenoncalledanon-Newtonianfluid.Youcanmakeiteasilyusingequalpartsofwaterandcornflour,likeIhavehere.Anon-Newtonianfluidisstrangebecauseyoucanpouritlikealiquid,butifyouputanypressureonit,itsuddenlybecomeshardasconcrete.Infact,itbecomeshardenoughtostandon.Then,assoonasyoutakethepressureoff,itbecomesaliquidagain.Thisshowsthatitispossiblethatsomethingcanexistasaliquidandasolidatthesametime.usefulphrases:Talkingaboutscientificphenomena..can/cannotexistintheformofasolid/gasandaliquid/plasma......Isbotha...Anda...atthesametime..howlight/soundisreflected......theexistenceofother…Thisoccurswhen...Ifyou....itwillbecome....Thatdemonstrates….Thisexperiment/researchshows...Throughthis,weknowthat...Wecanprovethat...Thisevidenceproves…Today,Iwanttotalktoyouaboutthepositiveandnegativechargesofmolecules.Wecandemonstratehowtheseinteractthroughasimpleexperimentusingmilk,dishsoap,andfoodcoloring.First,coverthebottomofashallowplatewithmilk.Nowaddtwoorthreedropsofdifferentliquidfoodcoloringtothecenterofthemilk.Theyshouldformonelargedarkpuddleinthemiddleofthemilk.Now,dipacottonswabintodishsoap,anditintothemiddleofthefoodplacecoloring.Youwillseethecolorsquicklymovetoescapefromthesoap,makinginterestingandbeautifulpatterns.Thishappensbecausethedishsoapmoleculeshaveastrongnegativecharge,andthemilkmoleculeshaveastrongpositivecharge.Likemagnets,thesemoleculesareattractedtoeachother,andsotheyappeartomovearoundontheplate,takingthefoodcoloringwiththem,makingitlooklikethecolorsarequicklymovingtoescapefromthesoap.Listeningtext:Judy:Oh,I'msosorrythatyouwereillandcouldn'tcomewithusonourfieldtrip.Howareyoufeelingnow?Better?Bill:Muchbetter,thanks.Buthowwasit?Judy:Wonderful!IespeciallylikedanareaofthemuseumcalledLightGames.itwasreallycool.TheyhadahallofmirrorswhereIcouldseemyselfreflectedthousandsoftimes!Bill:Ahallofmirrorscanbealotoffun.Whatelsedidtheyhave?Judy:Well,theyhadanexperimentwherewelookedatabluescreenforawhile,andthensuddenlywecouldseetinybrightlightsmovingaroundonit.You'llneverguesswhatthosebrightlightswere!Bill:Comeon,tellme!Listeningtext:Judy:Theywereourownbloodcells.Forsomereason,oureyesplaytricksonuswhenwelookatabluescreen,andwecanseeourownbloodcellsmovingaroundlikelittlelights!ButtherewasanotherthingIlikedbetter.Istoodinfrontofawhitelight,anditcas