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