Post on 21-Aug-2018
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Slide1–UES/BrightStudentsTitleSlideSlide2–EnergyIntroductionEnergy.It’sinyou,yourhome,yourenvironment‐it’sineveryoneandit’severywhere.Energyiswhatmovesus,whatmakeslifehappen.Slide3–ThankstoEnergyToday,thankstoenergywecan:surfthenet,chatwithfriendsanddohomeworkonacomputer,watchamovie,playvideogames,listentomusic,cookdinner,orjustturnonalight.Slide4EnergyUseEnergyisalsousedtopowerschoolbuses,cars,planes,andtrains.Itisusedtoharvestfood,transportfoodtoourcommunities,andmanufacturethingssuchasclothing,toys,books,iPods,andfurniture.Infactalmosteverythinginourlivesrequiresenergyinsomeform.Eventhispresentationtakesenergy!
Questiontostudents(Questions1&2ontheStudentWorksheet):
Canyouthinkofsomethingyoudidorusedtodaythatrequiredenergy?Recordresponsesonchartpaperorontheboard.GivestudentstimetorecordselectedresponsesontheirStudentWorksheets.Canyouthinkofsomethingthatyouaredoingrightnowthatrequiresenergy?HavestudentsrecordtheirresponsesontheirStudentWorksheets.Slide5–HumansHarnessEnergyAlllivingthingsalsoneedenergyforlife.Oneamazingthingthatsetshumansapartfromotheranimalsisthatwehavelearnedtocapture,harnessandtransformenergytodoworkforus–toaccomplishgreatfeatsorsimplymakelifealittleeasier.Slide6WhatisEnergy?(Question3ontheStudentWorksheet)Energyisdefinedastheabilitytodowork.Energycomesindifferentformsandeachformoffersauniqueabilitytodowork.Formsofenergythatpeoplearefamiliarwithinclude…lightenergyheatenergysoundenergychemicalenergyandtheenergyofmotion.
Questiontostudents(Question4ontheStudentWorksheet):
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Canyouthinkofawayweuseeachoftheseformsofenergy?Slide7KineticandPotentialAllformsofenergycanbeclassifiedintotwocategories:kineticorpotential.Slide8–KineticEnergy(Question5ontheStudentWorksheet)Kineticenergyistheenergyofmotionandincludesenergyformssuchas[CLICK]electrical(themovementofelectrons),[CLICK]thermal(movementofatomsandmolecules),[CLICK]radiant(themovementofelectromagneticwaves),[CLICK]motion(themovementofobjects)and[CLICK]sound(whichalsomovesinwaves).Slide9PotentialEnergy(Question6ontheStudentWorksheet)Potentialenergyisstoredenergyortheenergyofposition.Formsofpotentialenergyincludechemical(energystoredinthebondsofatoms),storedmechanical(energystoredinobjectsbyapplicationofaforce),nuclear(energystoredinthenucleusofanatom),andgravitational(energyofposition–suchawaterheldbehindadamorarockontopofahill).Slide10EnergyCanChangeForms(Question7ontheStudentWorksheet)AnimportantandamazingthingaboutenergyisthatITCANCHANGEFORMS!Hereisanexample:Whenyoueatbreakfastinthemorning,youareeatingaformofchemicalpotentialenergy(measuredincalories).Yourbodiestransformthechemicalenergyoffoodintomechanicalenergythatallowsyoutomoveanddoworklikeridingabike.
Slide11:EnergyTransformations–RadianttoChemicalEnergytransformationisabasiccharacteristicofenergy.Becauseenergycanchangeforms,wecanputittoworkforus.Someotherexamplesofenergytransformationinclude:
Radiantlightenergyischangedintochemicalenergybyplantsduringphotosynthesis.
Slide12:EnergyTransformations–ElectricaltoRadiantandThermalElectricalenergychangestoradiantandthermalenergywhenweturnonalightbulb.
Questiontostudents(Question8ontheStudentWorksheet):
Canyouthinkofanotherwaywetransformenergytodoworkforus?
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Slide13–EnergyQuestionOfallthedifferenttypesofenergy,oneisusedmostoftenbyhumans.Itisanenergythatcaneasilybetransformedintoothertypesofenergyandweuseitdaily.Doyouknowwhattypeofenergythisis?Slide14–Electricity(Question9ontheStudentWorksheet)Electricity!Electricalenergy,orelectricity,istheflowofelectrons.Itisauniquelyversatileformofenergy.Itcanbeeasilytransformedintootherformsofenergy,suchasheat,light,ormechanicalenergy.Becauseofitsabilitytoeasilychangeforms,weuseelectricitytodomanythingsforus–weputittowork!Slide15EnergyTransformationsLet’sthinkabouthowweputelectricitytowork.Considerwhathappenswhenyouturnonalight.Whatkindsofenergytransformationsoccurtomakethishappen?Slide16–PluggingintoCoal
Questiontostudents(Question10ontheStudentWorksheet):
Thefirstthingtoconsideris:whatistheoriginalsource?Whatkindsofenergysourcesareusedtogenerateelectricity?Brainstormwithstudentsenergysourcesthatareusedtoproduceelectricity(coal,oil,sun,wind,water,etc.).Slide17–HowaCoalPlantWorks–TransformingEnergyWhileelectricitycanbeproducedfromseveralsources,wewillusecoalasanexampletoshowtheenergytransformationsthatmusttakeplacetolightupthatbulb.
• Startingwithcoalatthesource(whichischemical,potentialenergy)…• Coalisburned,transformingitschemicalenergyintothermalenergy• Thethermalenergyisusedtocreatesteamwhichthenspinsaturbine
transformingthethermalintomechanicalenergy• Themechanicalenergyspinsmagnetswithincoilsofcopperwirewhich
transformsthemechanicalenergyintoelectricalenergy(thisistheelectromagneticeffect!)
• Theelectricitytravelsthroughwirestoourhomes…• Andfinally,electricityistransformedintoheatandlightenergyasweturnon
thelight!Slide18–EnergyTransformationsSummary
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Sojusttoturnonalight,atleast4energytransformationsmusttakeplace!Butbecauseoftheseenergytransformations,wecanturnonalightusingthepotentialenergystoredincoal.
Questiontostudents(Question11ontheStudentWorksheet):
So,nowweknowtheenergytransformationsthatmusttakeplacetolightabulbfromtheoriginalenergysourceofcoal.FromyourlistofotherenergysourcesinQuestion10,describehowoneormoreoftheseenergysourcesmightbetransformedtolightabulb.Reviewwithstudentstheirresponsestothepreviousquestioninwhichtheybrainstormedthingsthatareusedtoproduceelectricity.Selectafewofthesesourcesanddiscusshowthesesourcesmightbetransformedtoproduceelectricity.Slide19RenewableandNonRenewableEnergySources(Question12ontheStudentWorksheet)Currently,yourcommunity’sprimarysourceforelectricityiscoal.However,thereareactuallymanyenergysourcesfromwhichelectricitycanbegenerated.Thesesourcesaregenerallyclassifiedasrenewableornonrenewable.Slide20NonRenewableEnergySources(Question13ontheStudentWorksheet)Non‐renewableenergysourcesarelimited,finiteresourcesthatdonot“renew”themselvesandthusonceused,aregone.Coalisanon‐renewableenergysourcebecauseasitismineditdoesnotreplenishitself.Othernon‐renewablesourcesincludenaturalgas,petroleum(oil),anduranium.Eachofthesesourcesmustbeminedfromtheearthandtheirsupplyislimited.Slide21FossilFuels(Question13ontheStudentWorksheet)Coal,naturalgas,andoilarealsotermed“fossilfuels”becausetheydevelopedfromdecompositionofplantsandanimalsthatlivedhundredsofmillionsofyearsago.Thefossilizedremainsofthedeadplantsandanimalswereburiedandcompressedundermanylayersofsediment.Theincreasedpressureandtemperatureoverhundredsofmillionsofyearstransformedtheremainsintocarbon‐richpocketsofpotentialenergy.Thustheyarecalledfossilfuelsand,onceused,aregone–theyareliterally“non‐renewable.”Slide22PollutionfromFossilFuels(Question14ontheStudentWorksheet)
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Fossilfuels(asdescribedwithcoal)areburnedtogenerateelectricity.Unfortunately,thisprocessemitscarbondioxideandothergasesintotheatmosphere,whichpollutetheenvironmentandcontributetoglobalclimatechange.Aswell,theminingoffossilfuelscanhaveverydamagingimpacts.Andbecausefossilfuelsarenonrenewable,oursupplyislimited.Slide23RenewableEnergySources(Question15ontheStudentWorksheet)Renewableenergysourcesareconsideredrenewablebecausetheyareneverending–theyareabletoreplenishthemselves.Theseincludehydropower(thepowerofwater),biomassenergy(alsocalledbioenergy‐fromlivingmatter),windpower(thepowerofmovingair),geothermalenergy(heatenergyfromtheearth),andsolarenergy(energyfromthesun).Theseenergysourceswillremainaslongasthereisflowingwater,livingmatter,wind,heatfromtheearth,andsunshine.
Questiontostudents(Question16ontheStudentWorksheet):
Whataresomedifferencesbetweenrenewableandnonrenewableenergysources?DiscussanswerstothisquestionandgivestudentstimerecordtheiranswersontheirStudentWorksheet.Slide24TurningaTurbinefortheElectromagneticEffect(Question17ontheStudentWorksheet)Likenon‐renewableenergysources,renewableenergysourcescanbetransformedtogenerateelectricity.Aswithfossilfuels,thepotentialenergyfromthesesourcesistransformedintomechanicalenergytoturnturbines…whichspinmagnetsincoilsofcopperwire…whichgeneratesanelectricalcurrent.Thisprocess–thisphenomenon‐‐isknownastheelectromagneticeffect.Slide25SolarEnergy–SolarThermalSolarenergyisspecialbecauseitcanbeusedtogenerateelectricityintwoverydifferentways.Oneisthroughtheelectromagneticeffect,inwhichtheheatfromthesunisconcentratedandusedtogeneratesteamtospinaturbine.Slide26SolarEnergyPVInadditiontotheelectromagneticeffect,thereisanotherprocess–anotherphenomenon–forgeneratingelectricitywithsolarenergy.Thephenomenonisknownasthephotovoltaiceffect.‘Photo’meanslightand‘voltaic’meanselectricity‐‐so“photovoltaic”meanselectricitygeneratedfromlight.
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Slide27–ThePhotovoltaicEffectHowaSolarCellWorks(Question18ontheStudentWorksheet)Thephotovoltaiceffectoccurswhensunlightisshoneonspecialsubstancesandcauseselectronstoflow‐‐anelectriccurrent!Themainsubstanceinwhichthisoccursissilicon,whichisoneofthemostabundantmaterialsintheEarth’scrust.Siliconisusedtomakesolarcells,whichareusedtomakesolarpanels,whicharespecificallyfabricatedtodirectaflowofelectrons–thatis,togenerateelectricity!
Review“HowaSolarCellWorks”withstudentspointingoutthatsunlightiscomposedoftinyparticlescalledphotons.Photonsstrikeandexciteelectronsin
thesolarcell.Thisstartstheflowofelectrons–electricity!Slide28–GeneratingElectricitywithRenewableEnergySourcesWhetherthesourceissolar,wind,geothermal,hydroorbiomass,generatingelectricitywithrenewableenergysourcesavoidstheenvironmentalimpactsassociatedwiththeminingandburningoffossilfuels.Italsoallowsustoconservenon‐renewableenergysources.Slide29–Environment(Question19ontheStudentWorksheet)Animportantthingtorememberisthatallofourenergysources(renewableandnon‐renewable)areconsideredtobenaturalresources–thatistheycomefromnature–theworldaroundus–ourenvironment.Whenconsideringwhichenergysourcetouse,itisveryimportanttoconsidertheenvironmentaleffectsofusingthatsource.Howmuchpollutiondoesthissourceproducewhenitisusedtogenerateelectricity?Whataffectdoesminingorotherwiseextractingthissourcehaveontheoverallenvironment?Howmuchofthissourceisavailable?Theseandotherquestionsareimportanttoaskwhenconsideringenergysources!
Questiontostudents(Question20ontheStudentWorksheet):
Canyouthinkofsomeotherquestionstoaskwhenconsideringtheuseofanenergysource?DiscussanswerstothisquestionandgivestudentstimetorecordtheiranswersontheirStudentWorksheet.Slide30–QuestionofAbundanceSinceoneconsiderationregardingenergychoicesisitsavailability,whichofallthechoicesdoyouthinkismostabundanthereinArizona?
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
Slide31–Arizona’sSolarPotential(Question21ontheStudentWorksheet)SolarEnergy!That’sright,ourstateisblessedwithanabundanceofclean,brightsunshine.Thismapshowstheamountofsolarenergy(inwatthourspersquaremeter)reachingthegroundperday.Thedarkerthered,themoresolarenergy.CanyouseethattheamountofsolarradiationreachingtheearthisveryhighinArizona?ThismeansthatArizonahassomeofthebestsolarenergypotentialintheUnitedStates.Slide32–Arizona’sEnergyUseToday(Questions22&23ontheStudentWorksheet)Evenwithourabundanceofsunshine,westillrelymostlyoncoalforourenergy,followedbynaturalgasandnuclearenergy.Renewablesourcescurrentlyprovideforonly2%ofourneeds.NewEEstandsfornewenergyefficiency,whichaccountsforenergynotusedthankstoenergyconservationandincreasedefficiencyoftheenergywedouse.Slide33–Arizona’sEnergyUseTomorrow(Question24ontheStudentWorksheet)Itisprojectedthatby2025,energyefficiencywillincreaseto7%.Also,Arizonawillincreasetheuseofrenewablesourcesofenergyto16%.Coalusewillbereducedto24%,nuclearincreasedto32%andnaturalgasto21%.Slide34EnergyEfficiencyAsouruseofrenewableenergysourcesincreases,ourrelianceonfossilfuelswilldiminish.Sincefossilfuelsarenon‐renewableandpolluting,itmakessensetousemorerenewableenergy.Whatalsomakessinceisincreasingourenergyefficiency.Butwhatexactlyisenergyefficiency?Slide35–TechnologyBringsEnergyEfficiency(Question25ontheStudentWorksheet)Energyefficiencymeansaccomplishingthesameworkbutwithlessexpenditureoftimeand/oreffort.Simplyput,itmeansusingthingssmarterandusingsmarterthings!Aswemoveintothis21stcentury,technologywillbringusmoreefficientwaystogenerateelectricity.Thisbecomespossibleastechnologicaladvancesallowustoproducemoreelectricityfromagivensource.Italsomeansdevelopingandusingproductsthatrequirelessenergytooperate.Increasingenergyefficiencyreducesoverallenergycosts,reducesconsumptionof
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
non‐renewableresources,andminimizesenvironmentalimpacts.Beingmoreefficientwithourenergyuseissomethingeveryonecando.Slide36–InsuringaBrightEnergyFutureToinsureabrightenergyfuture,savenaturalresources,andreducepollutionitisimportantthatweincreasetheuseofrenewableenergysourcesaswellastoincreaseenergyefficiency.Atthesametime,thereissomethingelsethatwecanalldorightnow,somethingthatcananddoesmakeahugedifference.Canyouthinkofwhatthismightbe?Slide37EnergyConservation!(Question26ontheStudentWorksheet):Wecanallconserveenergy!Conservingenergymeantouselessenergy.Thisreducespollution,savesnaturalresources,andalsosavesmoney!Slide38BehaviorandProductsConservingenergymeanstopersonallymakesmartchoicesinourenergyuse.WhiletherearemanyBrightSolutionsforenergyconservation,wecanconserveenergyintwobasicways:wecanmodifyourbehaviorandwecanuseenergyefficientproducts.Slide39–ModifyingBehavior(Question27ontheStudentWorksheet)Modifyingourbehaviormeanschangingthewaywedothings.Inregardtoenergyuse,thismightmean:
• Loweringorraisingthethermostatafewdegrees(not“supercooling”roomsinthesummerorover‐heatingtheminthewinter)
• Wearingasweaterifyoufeelcoolinsteadofturningontheheater• Turningoffthelightswhenyouleavearoom• Takingashortershowertoreducehotwaterconsumption
Slide40UsingProductsthatPromoteEnergyEfficientandConservation(Question28ontheStudentWorksheet)Wecanalsobuyproductsthatuseenergymoreefficientlyorhelpustobemoreconservative.Youcan:
• Buy“ENERGYSTAR”appliances(whichuselessenergytooperate)• Replaceincandescentbulbswithcompactfluorescentbulbs(CFLs)• Useatimertoturnonandofflights• Useapowerstripwithaswitchtoturnoffelectronics
Slide41–StudentsCanMakeaDifference
UESBrightStudents:TheConservationGenerationPreVisitPowerPointScriptforTeachers
UESbelievesthatstudentscanmakeadifference!UESinvestsinyourfuturebyhelpingyoutolearnaboutenergy–whichiswhatwearedoingrightnow!AndUESwillbevisitingyourclassroomsoonafterthisprogram!Ifyouagreetoparticipate,youwillreceivesomecool,take‐home,energyefficientproducts.Slide42–BrightSolutionsandYou(Question29ontheStudentWorksheet)ApplyingBrightSolutionstodayensuresabrightenergyfuturefortomorrow.SomequestionsthepresenterfromUESwillaskyouis,“Whatareyoudoingtosaveenergy?”and“Areyouusingenergywisely?”UESwantstoknow:“WhatareyourBrightSolutions?”Teacherinstructionstostudents:It’stimetobrainstormwayswecanhelpwiththeenergyoutlookforthefuture.Workwithapartnertoshareanddiscussthreethingsyoulearned.WritedownyourideasonyourStudentWorksheets.