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26 Cards in this Set
- Front
- Back
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Kinetic energy |
Amount of energy an object has due to its movement |
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Joules |
SI unit which work or energy is measured in |
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SI unit |
Standardised system called the International System of units
Système international |
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Temperature |
Measure of the average translational kinetic energy of particles |
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Thermal equilibrium |
Occurs when the temperature of two regions is uniform (same) |
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Specific heat capacity |
The amount of energy required to increase the temperature of 1kg of the substance by 1K or Celsius |
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Latent heat |
Heat added to a substance undergoing a change in state that does not increase the temperature |
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Specific latent heat of fusion |
Quantity of energy required to change 1kg of a substance from a solid to a liquid without a change in temperature. |
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Specific latent heat of vaporisation |
Quantity of energy required to change 1kg of a substance from a liquid to a gas without a change in temperature. |
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Conduction |
Transfer of heat through a substance as a result of collisions between neighbouring vibrating particles
Occurs fastest in solids e.g metals-silver & copper |
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Convection |
Transfer of heat in a fluid (liquid or gas) as a result of the movement of particles within the fluid.
Heat rises, cool moves to fall |
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Radiation |
Heat transfer without the presence of particles (vacuum) |
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Insulators |
Materials that are poor conductors of heat |
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Electromagnetic spectrum |
The full range of wavelengths of all electromagnetic waves |
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Albedo |
Is the proportion of incoming radiation that is reflected with no change in wavelength |
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Energy |
The ability to do work or cause change |
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Work |
Amount of energy transferred to or from an object by the action of a force |
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Potential |
Amount of stored energy |
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Infra-red |
Electromagnetic rays |
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Circulation |
Less dense, heat rises and cold, more dense air falls |
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Thermometer |
Device used to measure temperature Contains alcohol and some contain mercury |
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Kelvin scale |
An absolute scale where 0K gives an indication that the Kieron energy of all particles is 0 at that temperature |
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Emit |
Ability to release heat |
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Absorb |
Ability to take in heat |
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Vacuum |
Space, no particles, can only radiate heat |
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Gravitational |
Potential energy due to an object's height |
