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unit 3 lesson 1-4
unit 3
| Term | Definition |
|---|---|
| electric charge | properety that leads to electromagnetic interactions betwen the particles that make up matter |
| static electricity | the build up of electric charge on an object |
| electrical conductor | a material through which charges can move freely |
| electrical insulator | a material through which charges cannot move easily |
| semiconductor | special class of materials that conduct electric charge better than electrical insulators but not as well as electrical conductors |
| electric current | the rate of flow of electric charges |
| voltage | the amount of work required to move each unit of charge between two points |
| resistance | expressed in ohms |
| electric circuit | a complete closed path through which electric charges flow |
| series circuit | all parts connected in a row that forms one path for the electric charges to follow |
| parallel circuit | electric charges have more than one path that they can follow |
| magnet | to describe any material that attracts iron or objects made of iron |
| magnetic force | exert a push or a pull on each other |
| magnetic pole | |
| magnetic field |