Energyis never created nor destroyed It can be transformedfrom one form to another

Solar ChemicalChemical MechanicalNuclear ElectricalMechanical SandSalar ElectricalElectrical Thermal

F 30N W Fd Sandra doesd 5M 30N Sm 150J of workW 150J

w 75J Ps WH It takes 7 5Wt IOS 75J c s of power to pushPe 7.5W the chair

W 167005 W Fddi 3.05M

f Wldf e 16700 3.05m

5475N5475N of Force isapplied

0J15J

8515J

155

m 85.0kg PE Mghh 140M 85.0kg 981m15 Hom

HE21mVV 1167395 v FE

The skiertravels at 52.4m s at KEthe bottomof the hill 52.4ms PE

m 85.0kg PEmghh 70M 85.0kg 981m15 70in

58369.5 PE0HEHE muz

957583 37.06m s85.0kg

Theskierwill beapprox I4lx slower

m200kg PE Mghh 1000M 200kg 981m15 100amPE 1962000

HE

m200kg PEMgh Turned into MEhi500M 200kg 981m15 500in

9810005

1962000 981 0005 981000J

HE 9810005

HE 1962000J

m 600kg PE DE mghh 35M boong 9 81m15 35M 2060105

m 600kg PE pEmghh 15M 600kgC981m15 15M 882905

m 600kgREC HE zmv2L5m15 L 600kg 15m s 2 675005

Pt 1 Energy PE 4 Energy206010J 88290 67500 502205 of

thermal energyproduced

Conduction convection radiation

The more heat is added the faster the moleculesmove

ConductionConvectionConductionRadiation

290.15 173.15268 15 68269.15 95

Absolute zero is 0 Kelvinswe have not yetbeenable to get such alow temp Absolute zero is whenparticles

stopmoving

m O010kg Qemootc 90 callKgb Coorong calllegC 14CTi 35 CTf 21 C 12.6cal of energylostOT 140C

m 10g 0.010kg Q mootQ 16.5cal QTo 70 C C MFTf 85C 16.50 1 15 C 0.010kg 15Cc 110cal kgC

Snowtendstocontaina lot of airtrappedwithinthesnowcrystalsTheair istrappedandsotheamaneofheaetransferv a conduction5convection isreducedTheshapeof theiglooalsohelpstoinsulateTheopeningoftheiglooisloweredwhichmeansthecoldair will sinktothatlocation4enewarm airrisesinthemainpartoftheiglooGoosedownis filledwithfeathersThesefeatherscreatemanyourpocketsthatwilltrapairandretainbodyheatThiswillallowonepersontostaywarm

Aluminumisveryreflectiveandisabletoreflectthethermalradiationcomingfromthefoodbackontothefoodit isalsoabletotrapairwithinthealuminuminordertokeeptheheaeinside

Isotopes all have the same number of protonsIsotopes have a different number of neutrons

50micrograms25micrograms12 5micrograms

Half life of sodium 24

Amane88so1ofsample76

g so40so Iolo 21 1 1 1 1is so 45Go75 aoiosno

time Chars

Nuclear fission when atoms splitapart Both generateNuclear fusion when atoms fusetogether

averylargeamount ofenerg

7 3 422 10 12

Silicon 29 29Oxygen 16 16Magnesium 24 12Magnesium 26 12

Ionizing harmful to youNon ionizing not harmful toyou

IfHg 39Ttopgypa affao THE 8380 34Th 4HeF 37m22 YNa EmgQeNi ggni 88

Renewable RenewableRenewable NonrenewableNonrenewable Non renewableRenewable

Pros Conscan be replaced lowcaseoperation highlydependentstableenergyprices onweather

highdevelopmentreliable costlowgreenhousegasemissions enabletoproduceinlargequantitiesnot available inall areas

Disadvantage AdvantageCO2emissions canburnfor a

longperiodof timepollutionmayruin habitats stable heat source