# Static charges and energy glossary terms chapter 10

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1. Electricity
A form of energy that results from the interaction of charged particles, such as electrons or protons.

e.g: electricity that powers a light bulb
2. Static charge (static electricity)
An electric charge that remains ''static'' or doesn't move.

e.g: an electric charge that remains on you so that next time you come in physical contact with someone else you shock them.
3. Charging by Friction
Involves the transfer of electric charge by rubbing or friction.

4. Electrostatic Series
A list of materials that have been arranged according to their ability to hold onto electrons.

e.g: Foam is better at holding on to electrons than wool, therefore it is lower in the chart.
5. Insulator
A material in which electrons cannot move easily from one atom to another.

e.g: Rubber
6. Conductor
A material in which electrons can move easily between atoms.

e.g: Metal, Trees
7. Semiconductor
A material in which electrons can move fairly well between atoms.

e.g: silicon
8. Ground
An object that can supply a very large number of electrons to, or can remove a very large number of electrons from, a charged object, thus neutralizing the object. It is connected to the Earth.
9. Electroscope
A device for detecting the presence of an electric charge.

e.g; a metal leaf electroscope
10. Charging by Contact
Generating a charge on a neutral object by touching it with a charged object.

e.g: Negative rod makes neutral pith ball negative.
11. Laws of electric charges
Laws that describe how two objects interact electrically when one or both are charged.

e.g: Like charges repel, opposite charges attract, charged and neutral objects attract each other.
12. Electric field
A property of the space around a charged object, where the effect of its charge can be felt by other objects.

e.g: Positive charges push away, and negative charges pull in (attract).
13. Induced charge separation
The movement of electrons in a substance, caused by the electric field of a nearby object, without direct contact between the substance and the object.

e.g: Negative rod near a neutral pith ball causes positive charges in the pith ball to go near the rod but remain in the pith ball.
14. Charged by Induction
Transferring an electric charge from one substance to another without direct contact.

e.g: The charged object causes (induces) electrons in the neutral object to move.
15. Ion
A charged atom or group of atoms.
16. Lightning rod
A metal sphere or point, attached to the highest part of a building and connected to the ground.
17. Electrostatic precipitator
A type of cleaner that removes unwanted particles and liquid droplets from a flow of gas.
18. Vann de Graff generator
A device that accumulates very large charges.