| A | B |
|---|
| electric circuits | the structures that provide paths through which electricity travels. |
| natural world | the aspects of the world not created or constructed by people. |
| circuit diagrams | the diagramatic representation of an electric circuit. |
| electrical symbols | simple symbols used in circuit diagrams. |
| open circuits | a circuit in which there is a break in the wire so that current can not flow. |
| closed circuits | a circuit in which the switch is turned to the "on" position, causing there to be no breaks anywhere in the wire. |
| electric charge | Property of matter responsible for electrical events. |
| positive charge | one of two types of charge, (+) |
| negative charge | one of two types of charge, (-) |
| electrically charged | an object that has an excess amount of either positive or negative charge. |
| static electricity | a build up of either positive or negative charge. |
| the pushes and pulls that electric charges exert on each other. | electrical forces |
| an object that has equal amounts of positive and negative charge. | electrically neutral |
| coulomb | a unit used in measuring the amount of charge. |
| electroscope | an instrument that can detect, and sometimes measures the amount of electric charges. |
| versorium | the earliest version of the modern electroscope. |
