电脑桌面
添加小米粒文库到电脑桌面
安装后可以在桌面快捷访问

高二英语unit13 The Water Planit课件人教版 课件VIP免费

高二英语unit13 The Water Planit课件人教版 课件_第1页
1/26
高二英语unit13 The Water Planit课件人教版 课件_第2页
2/26
高二英语unit13 The Water Planit课件人教版 课件_第3页
3/26
Whyisitblue?WaterPlanetWhatcanwaterbeusedfor?drinkWashclothesirrigationtransportprovidelivingspaceformarinelifeTheyarefloatingonthesurfaceofDeadSea.Canyouexplainhowtheycandothis?entertainmentpropertipropertiesesWhatpropertiesorWhatpropertiesorcharacteristicsdoyouknowcharacteristicsdoyouknowaboutwater?aboutwater?colorlesscolorlesstastelesstastelessodorlessodorlessthreethreeformsformsfeelingwetfeelingwetabsorbingheatabsorbingheatdissolvingdissolving1.Whatelsehaveyoulearnedaboutwaterandthewaterplanet?3.Doyouknowanypropertiesofwater?2.Whatwouldhappeniftherewerenowateronourplanet?Activity1Activity1..StructureofthepassageStructureofthepassage1minutetoskimthepassageandfillinthechartbelow.Youdonotneedtoreadthewholetext.ThepropertiesofwaterchemicalstructuresalinitydensityheatcapacityoceanmotionCarefulCarefulReadingReading______________percentofthelivingspaceon______________percentofthelivingspaceonearthisintheoceans.earthisintheoceans.Thereareabout_______________speciesinThereareabout_______________speciesintheoceans.theoceans.Marinelifeisincrediblyrichandvaried.Paragraph1Ninety-nineNinety-ninefivemillion海洋生物数量之大,种类之多,简直难以置信Lifeintheoceansrangesfromthetiniestplanktonallthewayuptogiantslikesharksandwhales.rangefrom…to/rangebetween…and…__从…到..之间变化___N:范围,射程awiderangeofinterestsandhobbiesWhatistherangeofthegun?海洋里的生物从微小的浮游生物到巨大动物,如鲨鱼和鲸鱼,都无所不包。Normalstateofwater:solidliquidgasnegativeend:+–↑↓positiveend:+–↑↓polar:+–↑↓medium:averagechannelmeansconditionH2O:2_______________+1____________=1___________HydrogenAtomsHydrogenAtomsOxygenAtomOxygenAtomHH22OMoleculeOMolecule√√√√√√√√√√√√Paragraph2Water’suniquechemicalstructureOxygenOxygenAtomAtomHydrogeHydrogenAtomnAtomapolarapolar(adj.(adj.极极性的性的))moleculemoleculeButthewaythewatermoleculeisformedgiveswateritsuniqueproperties但是水分子的结构方式赋予了水独特的性质。Becausewaterispolar,itcanbreakbothsolidsandgases.因为水是极性的,所以它能够分解固体和气体。Thenutrientsinwhateverfallsintotheoceanquicklybecomeavailabletootherlivingcreatures.任何落入海洋的东西其所含的营养物质都能很快被其他生物所利用。(宾语从句)seawater(saltwater)=________________+________________+___________salinityofseawateraffects:___________and______________Saltwaterhasa_______freezingpointandis_______thanpurewater.salinityofseawater:35‰35%√√dissolvedgasesdissolvedgasesdissolvedsolidsdissolvedsolidspurewaterpurewaterweightweightfreezingpointfreezingpointparagraph3lowerheavierthepurewateriswhatgivesseawateritsmainproperties,是纯水赋予了海水的主要特征Thesalinityoftheearth’soceansisaboutthirty-fivepartsperthousand,meaningthatthereareaboutthirty-fivegrammesofdissolvedsolidsandGasesinonekilogrammeofwater.地球海洋里的盐度约为35%0,即在每千克的水中约含有35克溶解的固体和气体Whichmeansthat(表语从句)Factorsofdensity:___________and_______________Unitofdensity:_____________=________________________________Densityofpurewater:________________=____________________________________——————————————————massmassvolumevolumekg/m3kg/m3kilogrammespercubicmetrekilogrammespercubicmetre1,000kg/m31,000kg/m3onecubicmetreofwaterweighsonecubicmetreofwaterweighsParagraph4onethousandkilogrammesonethousandkilogrammesDensityistherelationshipbetweenmassandvolumeandismeasuredinKilogrammespercubic...

1、当您付费下载文档后,您只拥有了使用权限,并不意味着购买了版权,文档只能用于自身使用,不得用于其他商业用途(如 [转卖]进行直接盈利或[编辑后售卖]进行间接盈利)。
2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。
3、如文档内容存在违规,或者侵犯商业秘密、侵犯著作权等,请点击“违规举报”。

碎片内容

高二英语unit13 The Water Planit课件人教版 课件

您可能关注的文档

确认删除?
VIP
微信客服
  • 扫码咨询
会员Q群
  • 会员专属群点击这里加入QQ群
客服邮箱
回到顶部