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14 terms

Chapter 14.1-14.2 Thermal Energy and Heat

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Temperature
the measure of motion of matter particles.
Fahrenheit scale
a temperature scale that defines the freezing point of water as 32 degrees and the boiling point of water a 212 degrees
Celsius scale
a temperature scale that defines the freezing point of water as 0 degrees and the boiling point of water as 100 degrees
Kelvin scale
the temperature scale in which the freezing point of water is 273 degrees and the boiling point is 373 degrees; 0 degrees is absolute zero
Absolute zero
the temperature at which no thermal energy can be removed from matter.
Heat
thermal energy that is transferred from matter at a higher temperature to matter at a lower temperature
Conduction
the transfer of energy by direct contact. The term can apply to either heat transfer or electron transfer.
Convection
the transfer of thermal energy by the circulation or movement of a liquid or gas
Convection current
the movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another
Radiation
the transfer of energy by electromagnetic waves.
Conductor
a material that transfers heat, electricity, or both easily.
Insulator
a material that does not transfer, heat, electricity, or both easily.
Thermal energy
the total energy of all the particles in an object.
Specific heat
The amount of heat that must be absorbed or lost for 1 gram of a substance to change its temperature by 1°C.