Flashcards
Physics Keywords
Flashcards do conjunto (8)
- 1U-valuesA u-value is the amount of energy that passes through 1 metre squared of material. The lower the u-value the better the insulator and the less energy lost.
- 2DenseDense is how tightly packed particles are.
- 3ConductionConduction is the transfer of energy in a solid.
- 4RadiationRadiation is the transfer of heat energy using waves. No particles are needed.Everything gives off radiation; different surfaces give off different amounts.
- 5ConvectionConvection is the transfer of energy in a fluid - a liquid or gas.
- 6EfficiencyEfficiency is how well a machine changes energy into useful forms of energy.
Efficiency = (Useful energy out/total energy in) x 100 - 7Energy usedEnergy used = power(kw) x time(h)
- 8Infrared radiationEnergy transfer by electromagnetic waves. All objects emit radiation. The hotter the object is the more radiation it is emitting at any given time.
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- GCSE Science (Physics) FlashCards sobre Physics Keywords, criado por Becca Westwell em 23-04-2014.
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- Becca Westwell
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