| A | B |
| heat | the transfer of thermal energy from one piece of matter to another |
| thermometer | a tool used to measure temperature |
| convection current | a pattern of flowing heat energy that forms when a gas or liquid transfers heat as it moves |
| thermal energy | energy due to moving particles that make up matter |
| radiation | energy that can travel through space of light |
| insulator | a material that limits the amount of heat that passes through it |
| conduction | the transfer of energy by one thing thouching another |
| conductor | a material that easily allows heat to pass through it |