| A | B |
|---|
| static electricity | transfer of electric charges from one object to another |
| electric current | flow of electric charge/electrons moving through wire |
| circuit | the path for an electric current |
| conductor | currents can pass through easily |
| insulator | currents cannot pass through these |
| series circuit | circuit has only one path for the current to pass through |
| parallel circuit | has more than one path for current to pass through |
| magnet | a piece of iron or alloy that has magnetic domains alligned and therefore attract certain materials |
| magnetic poles | a magnet has two of these (strongest part of magnet) |
| magnetic field | the magnetic force exerted in the region around a magnet |
| opposite | poles attract |
| like | poles repel |
| Earth | has a magnetic field making it a giant bar magnet |
| electromagnet | wire (with electric current) is wrapped around a core to produce a temporary magnet |
| resistance | opposition to the movement of electric charges flowing through a material |
| voltage | the difference in electrical potential between two places and causes current to flow throgh an electric circuit |
| circuit breaker | a safety device that uses an electomagnet to shut off a cirecuit when current gets too high |
| open circuit | a break in a circuit that causes the electrons to stop flowing |
| electric motor | a device that uses an electric current to produce motion (converts electrical energy to mechanical energy) |
| generator | a device that uses motion to produce an electric current |
| lightning rod | used to protect a building by causing charges to flow through it, into a wire, and into Earth |
| kilowatt-hour (kWh) | a measure of electrical energy equivalent to a power consumption of 1,000 watts for 1 hour |
