P3 OFR 21st Century Science Revision P3 3.0 / 5 based on 1 rating ? SciencePhysicsGCSEOCR Created by: zoeCreated on: 20-05-13 20:23 Electricity is a... Secondary energy source 1 of 20 Step one in generating electricity... The heat is used to boil water which creates steam 2 of 20 Step two in generating electricity... The steam drives the turbines which power the generators 3 of 20 Step three in generating electricity... Electricity produced in the generators is sent to a step up transformer and then to the national grid 4 of 20 Step four in generating electricity... Electricity is distributed to homes and businesses through the national grid at ugh voltages to reduce energy losses 5 of 20 Step five in generating electricity... The high voltages are stepped down by a transformer to the mains supply voltage in out homes of 230v 6 of 20 Nuclear power stations release energy owing to changes in the... Nucleus of radioactive substances 7 of 20 Nuclear waste emits ionising radiation, being exposed to this is called... Irradiation 8 of 20 If any part of a radiation source was to get on your clothes or enter your body you would become... Contaminated 9 of 20 These show the generation and distribution of electricity including the efficiency of energy transfers... Sankey diagrams 10 of 20 Renewable energy sources are primary energy sources therefore they will... Not run out 11 of 20 Six alternative ways top generate electricity... Wind, waves, hydroelectric power, biofuel, solar power, geothermal 12 of 20 In wind turbines what provides power to the generator? The force of the wind turning the blades 13 of 20 Water stored in the reservoir flows down pipes and turns the turbines in... A hydroelectric dam 14 of 20 A magnet is used to rotate a coil in a... Generator 15 of 20 Voltage x Current = Power 16 of 20 Power x Time = Energy Transferred 17 of 20 Number of units x Cost per unit = Total Cost 18 of 20 Energy usefully transferred / Total energy supplied x 100 = Efficiency 19 of 20 Material that is a poor conductor of heat... Insulation 20 of 20
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