| A | B | 
|---|
| electroscope | shows an electric charge | 
| Van de Graaff | generates a static charge on a sphere | 
| static | electric charges that stay put | 
| electric field | an area where electric charges push & pull | 
| electric charge | a plus or minus in a field | 
| field lines | rays that show directions of electric force | 
| conduction | charges moving by touch | 
| induction | charges caused by closeness | 
| friction | charges move by rubbing | 
| static discharge | static charge moving to ground | 
| conservation of charge | charges are neither created nor destroyed | 
| attract | opposite charges | 
| repel | similar charges |