| A | B |
|---|
| Fahrenheit scale | The temperature scale on which 32 and 212 are the temperatures at which water freezes and boils. |
| Celsius scale | The temperature scale on which zero and 100 are the temperatures at which water freezes and boils |
| Kelvin scale | The temperature scale on which zero is the temperature at which no more energy can be removed from matter |
| absolute zero | The temperature at which no more energy can be removed from matter |
| heat | The transfer of thermal energy between particles within a substance. The transfer of electrons from a charged object to another object |
| conduction | The transfer of thermal energy between particles within a substance. The transfer of electrons from a charged object to another object |
| convection | The total energy of a substance’s or material’s particles due to their movement or vibration |
| radiation | The transfer of energy by electromagnetic waves |
| insulator | A material that does not easily transfer thermal energy or electric current between its particles |
| specific heat | The amount of thermal energy required to raise the temperature of one kilogram of a substance by one kelvin. |
| states | The three forms (solid, liquid, and gas) in which matter exists. |
| change of state | The physical change of matter from one state to another. |
| freezing point | The temperature at which a substance changes from a liquid to a solid |
| boiling point | The temperature at which a substance changes from liquid to gas |
| heat engine | A device that converts thermal energy into mechanical energy |
| external combustion engine | An engine powered by fuel burned outside the engine. |
| combustion engine | An engine that burns fuel inside cylinders within the engine |
