| A | B |
|---|
| atom | building block of matter |
| attract | to pull toward each other |
| battery | place on a battery where electric charge enters or leaves the battery |
| circuit | path along which electric current flows |
| closed circuit | complete path along which an electric current flows |
| conductor | material through which electric current passes easily |
| discharge | jumping of electric charges between two objects |
| electrical energy | one form of energy; energy is needed to do work |
| electrical current | flow of electric charges |
| electricity | electrical energy |
| electric motor | device that changes electrical energy into mechanical |
| electromagnet | temporary magnet made when electric current flows through a wire wrapped around an iron core |
| energy | ability to do work |
| filament | part of a light bulb that glows when electric current passes through it |
| generator | device that changes electrical energy into mechanical energy in electrical energy |
| insulator | material through which electric current does not pass easily |
| magnet | object that pulls iron and steel objects to it |
| magnetic field | space around a magnet where magnetism acts |
| magnetism | force around a magnet |
| open circuit | circuit in which electric current cannot flow because the path is not complete |
| parallel circuit | circuit that connects several objects in a way that the current for each object has its own path |
| repel | to push away from each other |
| resistance | how well electricity flows through a material |
| series circuit | circuit that connects several objects one after the other so that the current flows in a single path |
| static electricity | electricity at rest, that is produced by rubbing two objects together |
| switch | device used to start and stop the flow of electric current in a circuit |
| volt | unit used to measure voltage |
| voltage | push that moves electric charges from one place to another |
| watt | unit used to measure the energy used by an appliance in a certain amount of time |
