选修六unit 4 reading市公开课一等奖省课获奖课件

Unit4GlobalWarmingWarmingup&Reading第1页Windmills(风车),renewableSourceofenergy:

第2页Acoalpowerstation,non-renewable第3页An

oilrefinery(精炼厂),non-renewable第4页Anuclearpowerplant,non-renewable第5页Solarpanels(太阳电池板),renewable第6页Ahydro-electricdam,renewable第7页Renewableornon-renewable?√第8页Renewableornon-renewable?√第9页Whatisglobalwarming?Whatcauseglobalwarming?第10页Greenhouse第11页1.Haveyoueverseenagreenhouse?ismadeofglassusedforgrowingplants,especiallyduringcoldweather.第12页2.Howdoesthegreenhousework?第13页Theairinsidewaswarmbecausetheglasstraps(挡住,吸取)theheatfromthesunandkeepsitfromescaping(逃跑).

Thismakesthegreenhouseheat

up(热量上升)

andsotheplantscangrowThroughout(在……期间)thecoldperiod.第14页第15页第16页The

Earth

Is

Becoming

Warmer

ButDoesItMatter?第17页GlancequicklyatthemagazinearticleWhowrotethemagazinearticle?SophieArmstrong2)Whatisthenameofthemagazine?

EarthCare3)Makeadivisionofthetext.第18页Mainideasofeachpart:Part1(1)Introduceadebateovertheissueofglobalwarming.raisingaquestionPart2(2-5)Howglobalwarmingcomesabout.giving

examples,usinggraphs,explanation

第19页Part3(6)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Part3(7)It'suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.givingexamples,makingcontrastleavingaquestion第20页2.___________________________1.___________________Part2(2-5)How

globalwarmingcomesabout?theburningoffossilfuels

humanactivityCarbon

dioxideMethaneWhataretheGreenhousegases?1.2.3.Water

vapor

第21页Part3(6-7)Whataretheeffectsofglobalwarming?ariseinthesealevelSeverestorms,droughts,famines,thespreadofdiseases,andthedisappearanceofspeciesMakeplantsgrowfaster第22页Whatdothethreescientiststhinkaboutglobalwarming?believesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.Dr.JaniceFosterGeorge

HambleyCharles

Keelingthinkstheeffectsofglobalwarmingcouldbeveryserious(严重).thinks

global

warming

willbemildwithfewbadenvironmentalconsequences.第23页ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFoster

GeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea___________andcouldbe_____________.Morecarbondioxideisa__________thing,whichmakescrops__________moreandwillencourage______________________________.go

upcatastrophevery

seriouspositiveproduceagreaterrangeofanimals第24页Whatarethetwographsabout?ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2023.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1997.第25页Trueorfalse?1.Thetemperatureinthelastcenturydidnotseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.TTF第26页4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobal