Chapter 9 Static Electricity
Science Power 9 Static Electricity vocabulary
Terms in this set (17)
To have an electric charge, having either more or less than the usual amount of electrons
A stationary electric charge, typically produced by friction, that can cause sparks, crackling or the attraction of objects that lose/gain electrons easily
The study of stationary electric charges or fields as opposed to moving electric currents.
Having no electrical charge, having equal number of electrons and protons
A material that provides a lot resistance to electric flow; an object that holds charge in one place
A material that easily conducts electricity: allows electrons to flow easily
1) Law of Attraction
1)Opposite charges attract, (include a diagram & neutral objects)
2) Law of Repulsion
2) Like charges repel (include a diagram)
The name of the overall charge when an object has lost some electrons
The name of the overall charge when an object has gained extra electrons
The act of an object conducting electric charge through direct contact with a charged object (touching)
The act of an object being near a statically charged object becoming also statically charged (NO touching)
A discharge of electrons that balances two opposite charges near each other. If large enough is visible as a jagged beam of light for a split second.
A wire connected to the earth that prevents static charge buildup in electrical systems where static buildup would cause problems
Just a large spark, created by clouds having a strong charge (usually negative at the bottom, positively charged lightning is rare and has about 10x the electric current as negative)
Particle Model of Electricity
Is a model for electricity that includes positively charged protons and neutral neutrons (both in the nucleus) and negatively charged electrons that orbit around the nucleus. When two objects rub together (one way to transfer electrons) electrons are transferred from one object to the other. Some materials attract electrons strongly, and are more likely to become negatively charged. Other materials will give up their electrons and become positively charged.
Rubbing different objects together to create static charge