P2 Energy transfer by heating Keyword Definition Thermal conductivity Ability of a material to transfer energy by heating. Conductor A material with high thermal conductivity. Insulator A material with low thermal conductivity. Conduction The transfer of energy through a material by the vibration of atoms in a lattice and, in the case of metals, by the movement of ‘free-electrons’. Convection Circulation of a liquid or gas caused by increasing its thermal energy. Black body An object that absorbs all of the radiation incident upon it Black body radiation The radiation emitted by a black body Specific Heat Capacity The amount of energy required to increase the temperature of 1kg of a substance by 1oC. P2 Energy transfer by heating Keyword Definition Thermal conductivity Ability of a material to transfer energy by heating. Conductor A material with high thermal conductivity. Insulator A material with low thermal conductivity. Conduction The transfer of energy through a material by the vibration of atoms in a lattice and, in the case of metals, by the movement of ‘free-electrons’. Convection Circulation of a liquid or gas caused by increasing its thermal energy. Specific Heat Capacity The amount of energy required to increase the temperature of 1kg of a substance by 1oC. P2 Energy transfer by heating Keyword Definition Thermal conductivity Ability of a material to transfer energy by heating. Conductor A material with high thermal conductivity. Insulator A material with low thermal conductivity. Conduction The transfer of energy through a material by the vibration of atoms in a lattice and, in the case of metals, by the movement of ‘free-electrons’. Convection Circulation of a liquid or gas caused by increasing its thermal energy. Specific Heat Capacity The amount of energy required to increase the temperature of 1kg of a substance by 1oC. P2 Energy transfer by heating Keyword Definition Thermal conductivity Ability of a material to transfer energy by heating. Conductor A material with high thermal conductivity. Insulator A material with low thermal conductivity. Conduction The transfer of energy through a material by the vibration of atoms in a lattice and, in the case of metals, by the movement of ‘free-electrons’. Convection Circulation of a liquid or gas caused by increasing its thermal energy. Specific Heat Capacity The amount of energy required to increase the temperature of 1kg of a substance by 1oC.
