Chapter 7 vocab

Term Definition
Acetate A type of plastic used in photogenic film and overhead transparencies
Action-at-a-distance forces Forces that can have an effect on an object without touching it
Charging by conduction Process of transferring charge between objects by touching or rubbing
Charging by induction Process of rearranging electrons on a neutral object by bringing a charged object close to it
Conductors Materials that allow electrons to move freely on and through them
Contact forces Forces that have an effect only on objects that they touch
Coulomb The unit of electric charge, named after the French physicist Charles Coulomb; one coulomb is the amount of charge passing a point in one second when one ampere of current is flowing
Electric force A push or pull between charged objects
Electrons Negatively charges particles surrounding the atomic nucleus
Force A push or a pull exerted on an object
Grounding Connecting a conductor so that electric charge flows into Earth's surface
Insulators Materials such as glass, plastics, ceramics, and dry wood that do not allow electrons to move easily on or through them
Laws of static charge Physical laws that state that like charges repel, opposite charges attract, and neutral objects and charged objects attract eachother
Static charge An electric charge that can be collected and held very nearly fixed in one place
Van de Graaff generator A device that uses friction to produce a large static charge on a metal dome