| A | B |
| Thermal Energy | is the sum of the kinetic and the potential energy of the particles that make up a material |
| Temperature | is a measure of the average kinetic energy of the particles in a sample of matter |
| Heat | the movement of thermal energy from a warmer to a cooler object |
| Radiation | the transfer of termal energy from one material to another by electromagnetic waves |
| Conduction | the transfer of thermal energy by collisions of particles |
| Thermal Conductor | a material in which heat flows easily |
| Specific Heat | the amount of thermal energy needed to increase the temperature of 1 kg of a material by 1 degree Celcius |
| Thermal Contraction | is a decrease in a material's volume when its temperature decreases |
| Thermal Expansion | an increase in the volume of a material as its temperature increases |
| Convection | the transfer of thermal energy by the movement of particles from one part of a material to another |
| Convection Current | the cyclic movement of fluids because of convection. |
| Thermal insulator | a material which prevents the flow of heat |