| A | B |
|---|
| attract | to pull toward one another, as opposite poles of two magnets pull toward one another |
| electricity | a form of energy that can produce light, heat, and magnetism |
| repel | To push away, as similar poles of two m agnets push away from one another |
| force field | the space around a magnet or electric current where magnetic force is present |
| filament | the material in a light bulb (usually a thin wire) that glows when heated by an electric current |
| discharge | the release of a buildup of electric charge such as a spark or lightning |
| pole | either of two opposing forces or parts, such as the poles of a magnet |
| lodestone | a form of the mineral magnetite that is naturally magnetic or has become magnetized |
| communtator | a switching mechanism on a motor or generator |
| lightning | a flash of light caused by a discharge of static electricity between two cloud or from a cloud to the Earth |
| compass | an instrument that uses a freely moving magnetic needle to indicate direction |
| patent | a document granting the right to take credit for an invention |
| magnetism | a property of certain kinds of materials that causes them to attract iron or steel |
| direct current | current that flows in a circuit in one direction |
| current | the flow of electricity through a conductor |
| electromagnet | a piece of iron tht becomes a temporary magnet when electricity flows through an insulated wire wrapped around it. |
| static electricity | positive and negative electric charges that are separated from each other and are not moving |
