Topic P7: Energy;Definitions 0.0 / 5 ? PhysicsEnergyGCSEOCR Created by: MiriamLCreated on: 13-07-20 15:08 Energy Quantity (no. of joules) that tells you what is possible not what will happen. Energy can be kept track of using energy stores 1 of 14 Kinetic anything moving 2 of 14 Thermal any object (hotter it is the more it has) 3 of 14 Chemical anything that can release energy by a chemical reaction 4 of 14 Gravitational Potential anything that can fall 5 of 14 Elastic potential Anything stretched 6 of 14 Electrostatic two charges attracting/ repelling each other 7 of 14 magnetic two magnets attracting/ repelling each other 8 of 14 Nuclear atomic nuclei release energy from this store in nuclear reations 9 of 14 closed system collection of objects that can be treated completely on its own without any matter being exchanged with its surroundigs 10 of 14 Sankey diagrams Show the flow of energy; width of the arrow proportional to the amount of the energy 11 of 14 Efficiency How good a device is at transferring energy to useful sources. Expressed as decimal or a percentage 12 of 14 Power rate of transfer of energy Measured in watts W 13 of 14 power rating energy transferred every second 14 of 14
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