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Heat/temperature

Physics

TermDefinition
Heat Form of energy measured in joules
Temperature measure of the hotness or coldness of something
Thermometric property Physical property that changes measurably and repeatedly with temperature change
Latent heat Heat energy required to change state without a temperature change unit: joules
Specific latent heat Heat energy required to change the state of 1kg of a substance without a change in temperature jkg^-1
Specific latent heat of vaporisation Amount of energy required to change 1kg of the substance from a gas to a liquid without a temperature change
Specific latent heat of fusion Amount of energy required to change 1kg of the substance from a solid to a liquid without a temperature change
Conduction Transfer of heat energy in a solid by passing on kinetic energy from molecule to molecule
Convection Transfer of heat energy by the circulation of the heated parts of a liquid or gas
radiation Transfer of hear energy as electromagnetic waves, without the need for a medium.
Solar constant/ irradiance Amount of energy striking 1m^2 of the earth's atmosphere every second.
U-value the amount of heat energy that can be transmitted across 1m^2 of a materials surface every second, so long as there is a temperature difference of 1K on each side of the material.
Created by: Peter0
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