# glossary terms ch. 10 electricity

 Electricity a form of energy that results from the interaction of charged particles, such as electrons or protons. static charge (static electricity)electric charge that remains "static"  or doesnt move. charging by friction involves the transfer of electric charge by rubbing or friction (eg. walking across  carpet, combing your hair) electrostatic series Electrostatics; the study of electric charge Electrostatic series; used to determine the kind of electric charge produced on each substance when two substances are rubbed together. insulator a material in which electrons cannot move easily from one atom to anothereg. glass, wool, foam, ebonite conductor a material in which electrons can move easily between atomseg. metals semiconductor a material in which electrons can move fairly well between atomseg. some non-metals (silicon) ground an object that can supply a verry large number of electrons to, or can remove a very large number of electrons from a charged object, thus neutralizing the object electroscope a device for detecting the presence of an electric charge. eg. pith ball electroscope, metal leaf electroscope charging by contact generating a charge on a neutral object by touching it with a charged object. an object that becomes charged by contact always gets the same type of charge that is on the object that charges it. laws of electric charges laws that describe how two objects interact electrically1. like charges repel    eg. (-) + (-) OR (+) + (+) REPEL2. opposite charges attract   eg. (-) + (+) 3. charged and neutral objects attract :(N)+(-) OR (N)+(+) electric field A property of the space around a charged object, where the effect of its charg can be felt by other objects an electric field produces an electric force on any other objects that are in the field.objects with greater net charges have stronger electric fieldsthe greater the distance from a charged object, the weaker the electric field of the object is. induced charge separation induced charge separation is the movement of electrons in a substance, caused by the electric field of a nearby charged object, without direct contact between the substance and the object.eg. negative rod near a neutral pith ball causes electrons in the pith ball to move as far away from the rod as the object allows. thus, the electrons in the rod are attracted to the protons in the pith ball. ion An ion is a positively or negatively charged atom(s) or molecule(s) lightning rod A lightning rod is a metal sphere or point, attached to the highest part of a building and connected to the groundespecially important in ural areas where a house or barn may be the tallest building.eg. the CN tower has a large lightening rod on top, because it is the tallest structure in the area Electrostatic precipitator makes use of the laws of electric chargesconsists of a series of plates and highly charged wires, and can reduce air pollution from dust particles and liquid droplets. Van de Graaff generator A device that accumulates very large chargestransferres very large chargeshave been used in atom smashers since 1930 Radiation dosimeter a small device that measures exposure to radiation. Authoralexisboudreau ID177615 Card Setglossary terms ch. 10 electricity Descriptionelectricity unit grade 9 science chapter 10 glossary terms Updated2012-10-16T00:30:59Z Show Answers