| A | B |
|---|
| circuit diagram | the diagramatic representation of an electric circuit. |
| electric circuits | the structures that provide paths through which electricity travels. |
| electroscope | an instrument that is used to detect charged objects |
| positive charge | one of two types of electric charge; the other type is negative charge |
| closed circuit | a circuit in which the switch is turned to the “on” position, causing there to be no breaks anywhere in the wire |
| electrical symbols | simple symbols used in circuit diagrams. |
| natural world | the aspects of the world not created or constructed by people |
| static electricity | a buildup of either positive or negative charge; consists of isolated motionless charges, like those produced by friction |
| coulomb | the unit for electrical charge. |
| electrically charged | an object that has an excess amount of either positive or negative charges |
| negative charge | one of two types of electric charge; the other type is positive charge |
| versorium | the earliest version of today’s electroscope. |
| electric charge | either positive or negative charges. |
| electrically neutral | an object that has equal amounts of positive and negative charges. |
| open circuit | circuit in which there is a break in the wire so that current cannot flow; a switch turned to the “off” position is one way to cause a break in the wire. |
