| A | B |
|---|
| electric charge | a condition produced by electricity |
| electric current | a flow of electric charge |
| electrocuted | killed by an electric current |
| insulator | a material that electricity cannot go through |
| conductor | a material that electricity can go through very well |
| switch | something that turns electric current on and off |
| toggle switch | a kind of switch that is used for lights in a home |
| knife switch | a kind of switch that is good for doing experiments |
| pushbutton switch | a kind of switch that is used for doorbells |
| electron | a tiny bit of negative electricity |
| electric charge | the kind of electricity; it can be positive or negative |
| repel | push away |
| electrode | the negative or positive part of an electrical cell |
| electrolyte | a liquid or moist substance that can conduct electricity |
| wet cell | an electrical cell that has a liquid electrolyte |
| dry cell | an electrical cell that has a moist electrolyte |
| terminal | the negative or positive end of an electrical cell |
| electric curcuit | the path that an electric current follows |
| closed circuit | a complete path for electricity to move along |
| open circuit | an incomplete path that electricity cannot move along |
| series circuit | a circuit that has just one path for the electric current to follow |
| parallel circuit | a circuit that has more than one path for the electricity to follow |
| ampere | the unit for measuring electric current |
| ammeter | an instrument for measuring electric current |
| electromotive force | the push that makes electricity move |
| volt | the unit for measuring electromotive force |
| voltage | the number of volts |
| battery | two or more electrical cells connected together |
| voltmeter | an instrument for measuring electromotive force |
| oppose | try to stop |
| resistance | a measure of how easy or hard it is for electric current to move through a material |
| nichrome | a high-resistance metal used to make wires for light bulbs |
| superconductor | a material that loses all its resistance when it is very cold |
| ohm | the unit of resistance |
| predict | tell what will happen |
| short circuit | a short electrical path that has very low resistance |
