| A | B |
|---|
| Power | The rate of energy conversion |
| Watts | Unit for measuring power |
| Energy | The ability to do work |
| Conservation | Energy cannot be made or destroyed |
| Temperature | A measure of how much energy particles contain |
| Heat | A measure of the total amount of energy in a substance |
| Conduction | Movement of heat through solids by particle vibrations |
| Convection | Movement of heat through gases and liquids by particle movements |
| Radiation | Movement of heat by electromagnetic waves |
| Joules | Unit of energy |
| Current | Flow of electrons |
| Conductor | A material which allows heat or electricity to pass through it easily |
| Insulator | A material which prevents heat or electricity from moving through it |
| Ammeter | Used to measure a flow of electrons |
| Diode | Allows electricity to flow through it in one direction only |
| Cell | A store of chemical energy used in circuits |
| Battery | A number of cells joined together |
| Lamp | Converts electrical energy into light energy |
| Resistor | A component which reduces the flow of electrons in a circuit |
| Resistance | A "force" which opposes a flow of electrons |
| Voltage | An electrical force which drives electrons around a circuit |
| Amps | Unit of current |
| Volts | Unit of voltage |
| Ohms | Unit of resistance |
