Unit 2 School in Canada Lesson 10 Mr. Wood's Science Class拓展知识雾霾天气

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1、Unit2SchoolinCanadaLesson10Mr.Wood'sScienceClass雾霾天气HazyWeatherTian'anmenSquareisinthefog.Acoupleweretakingpicturesamidthehaze.TheBeijingNationalStadium,ortheBird’sNest.PopularScience大众科学相对湿度relativehumidity雾Fog霾Haze>90%<80%能见度visibility<1km1km-10kmMeasu

2、rement计量方式AQJ(AirQualityIndex)空气质量指数PM2.5PM10SO2NO2O3COUpdatedEveryhourAPI(AirPollutionIndex)空气污染指数SO2NO2PM10UpdatedEverydayWhatisPM?ParticularMatterPM10可吸入颗粒物PM2.5可入肺颗粒物Burningoffossilfuelsinvehicles机动车燃油Powerplants发电厂Variousindustrialprocesses各类工业生产Air

3、QualityIndexLevelsofHealthConcernNumericalValueGood0-50Moderate51-100UnhealthyforSensitiveGroups101-150Unhealthy151-200VeryUnhealthy201-300Hazardous>3001.Terrifying恐怖Hanginthere！忍一下2.Ridicule调侃Dustandsmogiscrazilythick!Bestronganddonotbreathe!Thelonges

4、tdistanceintheworldisthatIcouldn’tseeChairmanMaoeventhoughIamrightinfrontoftheTian'anmen!最远的距离是站在天安门前却看不到毛主席！3.Fearless无畏Whateverdoesn’tkillyousimplymakesyoustronger！杀不死你的会让你更强大！梅花香自苦寒来！Thecauses：第一，污染物排放量大。Largepollutantemission第二，扩散条件不利。Disadvantageou

5、sconditionfordispersal第三，区域污染和本地污染贡献叠加。Multiplyeffectofregionalpollutionandlocalpollution戴面罩wearthemask公共交通publictransportation混合动力车hybridcar清洁能源cleanenergy社会监督publicsupervisionWhatcanwedo？Weareallinthistogether!Weshallsurviveandthrivetogether!同呼吸，共责任！Th

6、ankyou!