Energy Changes in a System (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
15 cards from this deck
Kinetic energy store
Kinetic energy store
Stored by moving objects
Magnetic energy store
Magnetic energy store
Stored by magnets attracting or repelling
Thermal energy store
Thermal energy store
Stored in object due to its heat
Chemical energy store
Chemical energy store
Stored in chemical bonds
Electrostatic energy store
Electrostatic energy store
Stored by charges attracting or repelling
Elastic potential energy store
Elastic potential energy store
Stored in stretched or compressed objects
Gravitational potential energy store
Gravitational potential energy store
Stored when object is lifted to a height
Nuclear energy store
Nuclear energy store
Stored inside nuclei of atoms
Conservation of energy principle
Conservation of energy principle
Energy cannot be created or destroyed, only transferred
Specific heat capacity ()
Specific heat capacity ()
Energy to raise 1 kg of substance by 1°C
Wasted energy
Wasted energy
Energy transferred into undesired form
Effect of lubrication on energy loss
Effect of lubrication on energy loss
Reduces friction, less energy lost as heat
Higher thermal conductivity effect
Higher thermal conductivity effect
Heat travels more easily through material
Thick walls with low thermal conductivity
Thick walls with low thermal conductivity
Rate of cooling is slower
Efficiency
Efficiency
Ratio of useful energy output to total energy input