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1、HeatTransferConduction,ConvectionandRadiationToMakeFoldable:1.Ontheshortsideofthepaper,folditdownaninch.2.Nowfolditinhalf,hamburgerstyle.3.Nowfolditin1/3.ConductionConvectionRadiationHeatTransferExamplesDefinitionExamplesDefinitionExamplesDefinitionOutsid
2、eofFoldableInsideofFoldableHowisHeatTransferred?ThereareTHREEwaysheatcanmove.ConductionConvectionRadiationThermalEnergyTransferThermalenergytransferisheatmovingfromawarmerobjecttoacoolerobject.Thisisknownasthermalenergytransfer.CONDUCTIONHeatistransferred
3、fromoneparticleofmattertoanotherinanobjectwithoutthemovementoftheobject.Conduction=CONTACTConductionWhenyouheatametalstripatoneend,theheattravelstotheotherend.Asyouheatthemetal,theparticlesvibrate,thesevibrationsmaketheadjacentparticlesvibrate,andsoonands
4、oon,thevibrationsarepassedalongthemetalandsoistheheat.Wecallthis?ConductionMetalsaredifferentTheoutere______ofmetalatomsdrift,andarefreetomove.Whenthemetalisheated,this‘seaofelectrons’gaink_____energyandtransferitthroughoutthemetal.Insulators,suchasw___an
5、dp____,donothavethis‘seaofelectrons’whichiswhytheydonotconductheataswellasmetals.lectronsineticoodlasticWhydoesmetalfeelcolderthanwood,iftheyarebothatthesametemperature?Metalisaconductor,woodisaninsulator.Metalconductstheheatawayfromyourhands.Wooddoesnotc
6、onducttheheatawayfromyourhandsaswellasthemetal,sothewoodfeelswarmerthanthemetal.Haveyouever…TouchedametalspoonsittinginapanofboilingwateronlytobesurprisedbyHOWhotitis??Thinkbacktowhatyouknowaboutmetalsandnonmetals.Whatconductsheatbetter,metalornonmetal?Wh
7、y?EXAMPLEOFCONDUCTIONApieceofcheesemeltsasheatistransferredfromthemeattothecheese(Contact)CONVECTIONConvectionisthemovementthattransfersheatwithinfluidsandair(gas)HeatistransferredbycurrentswithinthefluidorgasConvection=VENTS(throughairandliquidparticles)
8、ConvectionmovesinacircularpatternConvectionWhathappenstotheparticlesinaliquidoragaswhenyouheatthem?Theparticlesspreadoutandbecomelessdense.Thiseffectsfluidmovement.Whatisafluid?Aliquidorgas.FluidmovementCooler,mored
