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Physics heat defs

TermDefinition
What is heat A form of energy (J)
What is temperature The measure of the hotness or coldness of a body(K)
What are thermometric properties Any physical properties that change measurably with temperature
Give 5 examples of thermometric properties 1. Colour 2. Electrical resistance 3. Length of a column of liquid 4. Emf - electromotive force of a thermocouple 5. Volume of a gas at constant pressure + pressure of a gas at constant volume
Define heat capacity The amount of heat energy needed to change the temperature of an object by 1K (JK^-1)
What is the formula for heat capacity E = CΔθ
Define specific heat capacity The amount of heat energy needed to change the temperature of 1kg of a substance by 1K (Jkg^-1K^-1)
What is the formula for specific heat capacity E = mcΔθ
What is latent heat Heat energy needed to change the state of a substance without a change in temperature(J)
Whats the equation for latent heat E = l
What is specific latent heat The heat energy needed to change the state of 1kg of a substance without a change in temperature(Jkg^-1)
Whats the equation for specific latent heat E = ml
What is Conduction Transfer of heat energy in a solid by passing on kinetic energy from molecule to molecule
Define convection Transfer of heat energy by circulation of the heated parts of a liquid or gas
Radiation Transfer of heat energy as electromagnetic waves, without the need for a medium
What does the solar constant mean The amount of solar energy hitting 1m^2 of the earths atmosphere every second
What is the u-value of a structure The amount of heat energy lost per second throuh 1m^2 of a structure when a temperature difference of 1K is maintained between its ends
Created by: JJoyce03
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