| Term | Definition |
| electron | a negatively charged particle |
| proton | positively charged particle of an atom |
| attract | Pull together |
| repel | Push apart |
| electric current | a constant flow of electrons through a conductor |
| electric circuit | a complete pathway of conductors that electrons flow through |
| open circuit | A circuit that will not allow electricity to flow |
| closed circuit | electrons have a complete pathway to flow |
| series circuit | the electrical devices are connected in one continuous loop |
| parallel circuit | each device has its own separate loops |
| insulator | a material that does not let heat energy or electricity pass through it easily |
| conductor | a material that allows heat energy or electricty to pass through it easily |
| resistor | a device in a circuit that slows the electric current but does not stop it |
| electric forces | the attraction or repulsion of electric charges |