冀教版九年级英语上册《Let's Do an Experiment》Loo k into Science 课件

LookintoScienceLesson25Let’sDoanExperiment!Unit5

Whataretheydoing?Theyaredoinganexperiment.TalkfreelyHaveyoueverdoneanyexperiments?

Doyouliketodoexperiments?jarHeispouringsomewater.raincoatHehasmuchforce.Youransweriscorrect.Turnthejarupsidedown.experimentjarupsidepourcorrectscientificn.

实验；试验n.广口瓶；罐子n.上部；上边v.倒出；倾倒adj.

正确的；恰当的adj.

科学的methodraincoatforcepressureconcluden.方法；办法n.

雨衣n.力量；v.迫使；强迫n.压力，压强；挤压v.得出结论；断定Listenandfindoutwhatweneedtodotheexperiment.jarapieceofcardboardwater→→→Readthelessonandanswerthequestions.1.WheredoesDannythinktheyshoulddotheexperiment?2.Whatkeepsthewaterinthejar?Hethinkstheyshoulddoitoutside.Theforceoftheair.3.IsJennysureofhertheory?Howdoyouknow?4.WhydoesDannyputonhisraincoat?5.WhatdoesDannyconclude?Yes,sheis.ShethinksthatBriancandotheexperimentoverDanny’shead.Hethinksthewaterwillpourout.Theairisstrongerthanhethought.Readthelessonandfillinblanks.

Let’sdoaninterestingexperiment.First,I____ajar_____adesk,____it_____water,then_____thetop____apieceofcardboard.WhenI____thejar_____________,canyouguesswhatwillhappen?putonfillwithcoverwithturnupsidedownReadtheexperiment.Putthesentencesinthecorrectorder.□Putapieceofcardboardoverthejar.□Thejarofwaterisupsidedown，butthewaterstaysinthejar.Thisisbecauseairpressurepushesthecardboardontothejar.□Filltheglassjarwithwater.□Turntheglassjaroverquickly.Holdyourhandonthecardboardforafewseconds.□Removeyourhandfromunderneaththejar.Whathappens?□Thereismoreairoutsidethejarthaninside，sothereismoreairpressureoutsidethaninside.2

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TheScientificMethodReportName:_______________________________________Material:_______________________________________Procedure(过程):1.Fill_____with_____.2.Cover______with_________________andholditthere.Theforceoftheair/Theairpressureajar,apieceofcardboard,somewaterajarwaterthetopapieceofcardboard3.Turnthejar___________.4.____hand____thecardboard.Results:__________________________Conclusions:___________________________________________Theforceoftheairkeepsthewaterinthejar.Thewaterstaysinthejar.upsidedownTakeoffTranslatethephrases.做实验用……装满……用……盖住……把……从……拿开涌出，倒出doanexperiment/experimentsfill…with…cover…with…take…off…pourout科学方法确信…………的力量足够强大scientificmethodbesureof/todo/thattheforceofstrongenough翻译下列句子，每空一词。1.我确信你是一个诚实的人。I____________thatyouareanhonestman.2.请用一块玻璃盖上那个杯子。Please______thecup_____apieceofglass.3.小心，否则你会弄湿的。Becareful,oryou’ll____________.4.把箱子倒过来，你会找到标签的。______thebox______________,thenyou’llfindthelabel.amsurecoverwithgetwetTurnupsidedownDiscussingroups.Inthisexperiment,whatwillhappenwhenyouuselesswater,morewater,wet