Chapter 20 Vocabulary

Electroscope

A device used to determine charge

Plasma

A gas like state of negatively charged electrons and positively or negatively charged ions

Charged

An object that exhibits electrical interaction after rubbing is said to be...

Insulator

Conductor or Insulator...Glass

Conductor

Conductor or Insulator...a material through which charges move about easily

Conductor

Conductor or Insulator...air as a plasma

Conductor

Conductor or Insulator...aluminum

Insulator

Conductor or Insulator...an object, held at the midpoint and rubbed only one end, becomes charged only at the rubbed end

Conductor

Conductor or Insulator...charges applied to one area spread quickly over the entire object

Insulator

Conductor or Insulator...charges removed from one area are not replaced by charges from another area

Conductor

Conductor or Insulator...copper

Insulator

Conductor or Insulator...dry air

Insulator

Conductor or Insulator..A material through which a charge will not move easily

Static Electricity

Electricity caused by rubbing is...

Charging by Conduction

Giving a neutral body a charge by touching it with a charged body

Insulators

Materials through which charges will not move easily are electrical...

Elementary Charge

The magnitude of the charge of an electron

Coulomb's Law

The magnitude of the force between charge qA and charger qB, separated by a distance, is proportional to the square of the distance

Electrostatistics

The study of electrical charges that can be collected and held in one place is...

Insulator

Conductor or Insulator...dry wood

Conductor

Conductor or Insulator...graphite

Insulator

Conductor or Insulator...most plastics

Conductors

Materials that allow charges to move about easily

Charging by Induction

Separating the charges in an object without touching the object

Coulomb

The SI standard unit of charge

Neutral

The positive charge in...objects exactly balances the negative charge

Attract

Two objects with opposite charges...

Repel

Two objects with the same type of charge...

Positive and Negative

Two type of charges are...