| A | B |
|---|
| thermal energy | energy of the movement of the particles that form an object |
| heat | the flow of energy from warmer matter to cooler matter |
| temperature | the measure of how fast an object's particles are moving |
| conduction | the flow of heat energy from one molecule to the next |
| insulator | a material that does not conduct heat or electricity well |
| convection | flow of energy that occurs when a warm liquid or gas moves |
| radiation | energy that can travel through empty space |
| expand | to become larger in size |
| contract | to become smaller in size |
| pyrometer | a device that measures very high temperatures |
