| A | B |
|---|
| attract | to pull toward each other |
| battery | a source of stored chemical energy |
| bulb base | the area on a lightbulb where one of the filament support wires extends down to the metal bead |
| bulb casing | the inside of the metal screw case on a lightbulb where the second filament support wire connects |
| circuit | a pathway for the flow of electricity |
| closed circuit | a complete circuit through which electricity flows |
| coil | a series of loops |
| conductor | a substance, commonly a metal such as copper or aluminum, through which electricity will flow |
| core | in an electromagnet, the material around which a coil of insulated wire is bound |
| electromagnet | a piece of iron the becomes a temporary magnet when electricity flows through an insulated wire wrapped around it |
| electricity | energy that flows through circuits and can produce heat, light, motion, and sound |
| electromagnetism | a property of electric and magnetic fields that causes interactions with electric charges and currents |
| energy | the ability to do work |
| energy source | a place where energy comes from, such as batteries, food fuels, and the Sun |
| force | a push or pull |
| incomplete circuit | a circuit that has a break in it |
| induced magnetism | the influence of a magnetic field on a piece of iron, which makes the iron a temporary magnet |
| insulator | a material that prevents the flow of electricity, commonly plastic, rubber, glass, or air |
| iron | a metal that sticks to magnets |
| magnet | an object that sticks to iron or steel |
| magnetic field | an invisible field around a magnet |
| magnetism | a property of certain kinds of materials that causes them to attract iron or steel |
| metal | a conductor for electricity |
| parallel circuit | a circuit that has two or more pathways for current to flow |
| permanent magnet | an object that sticks to iron |
| repel | to push away from each other |
| series circuit | a circuit that has only one pathway for current to flow |
| steel | a material made mostly of iron |
| stored energy | energy available for use |
| switch | a device used to open and close circuits |
| temporary magnet | a piece of iron that behaves like a magnet only when it is surrounded by a magnetic field |
| wire | a metal or other solid substance through which electric current moves |
