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1、上海牛津7Bwater-festival公开课WaterQuizHowmuchofthewateronearthisavailable(可利用的）todrink?A.95%B.26%C.1%2)Howmuchofyourbodyismadeupofwater?A.75%B.25%C.6%3)Howmuchwatershouldyoudrinkdailyforgoodhealth?A.1-2glassesB.3-4glassesC.6-8glasses4)Ahundredyearsago,earthhad_______.A.muchmorewaterthanthereisnowB.
2、alotlesswaterthanthereisnowC.thesameamountthereisnow5)Howlongcouldyoulivewithoutwater?A.AboutthreemonthsB.AboutsevendaysC.Aboutoneday6)Waterthatissafetodrinkiscalled____.A.cleanB.pollutedC.drinkablewatericesteam7)Howmanyformsdoeswaterhave?turninto转变成形态；形式fr__zemelt____/fri:z//bɔil//melt/boile
3、eLookandmatch:freezemeltboilcooldown冷却①②③④A.freezeB.meltC.cooldownD.boilListenandfillintheblanksWhat_______whenwaterboils?Whenwater______,itturnsinto______.Whathappens_____waterfreezes?Whenwater_____,itturns____ice.Whathappenswhenicemelts?Whenwatermelts,itturnsinto_____.Whathappenswhensteam__
4、__down?When_____coolsdown,it________water.happensintofreezeswhenboilssteamwatercoolssteamturnsintoWhen...,itturnsinto...I’vegotsomequestionsforyoutothinkabout.Whathappenswhenwaterboils?Whathappenswhenwaterfreezes?Whathappenswhenicemelts?Whathappenswhensteamcoolsdown?Whenwaterboils,itturnsinto
5、steam.Whenwaterfreezes,itturnsintoice.Whenicemelts,itturnsintowater.Whensteamcoolsdown,itturnsintowater.ThethreeformsofwaterA:Whathappenswhen…?B:When…,itturnsinto….boilsfreezesmeltscoolsdownPairworkLookandsay①②③④When…,it….GroupCompetition:125643Whathappenswhenwaterboils?Whenwaterboils,itturns
6、intosteam.1Whathappenswhenicemelts?Whenicemelts,itturnsintowater.2Dropsofwater.3Putadrylidonaglassofhotwater. Waitfor10seconds(秒).Takethelidoff.Whatcanyouseeunderthelid?Whathappenswhenwaterfreezes?Whenwaterfreezes,itturnsintoice.4Dropsofwater.Thesteamintheairturnsintowateronthecoldglass.5Puts
7、omeicecubesinaglassofwater.Waitfor2minutes.Lookattheoutsideoftheglass.Whatisontheglass?Howdoesithappen?Whathappenswhensteamcoolsdown?Whensteamcoolsdown,itturnsintowater.6WaterWaterhasthreef______,theyares______,iceandwater.Whenwaterb_____,itt
