Energy Transfer 0.0 / 5 ? PhysicsEnergyIGCSEEdexcel Created by: HLeiperCreated on: 03-04-14 13:11 Principle of conservation energy Energy can never be created nor destroyed - only ever transferred from one form to another 1 of 11 Efficiency Useful energy output/total energy input 2 of 11 Wasted Energy No device is 100% efficient and the wasted energy is always dissipated as heat 3 of 11 Conduction Vibrating particles pass on their extra kinetic energy to neighbouring particles 4 of 11 Convection The more energetic particles move from the hotter region to the cooler region and take their heat with them 5 of 11 Radiation Energy that comes from a source and travels through some material or space 6 of 11 Insulation Something that does not conduct 7 of 11 Work Force Distance Moved Work = force x distance moved 8 of 11 Gravitational potential energy GPE = mass x gravity x height 9 of 11 Kinetic energy KE = 1/2 x mass x speed ^2 10 of 11 Power Rate of transfer of energy or rate of doing work Power = Work Done/Time Taken 11 of 11
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