1. Electricity
Static Electricity

2. What is Electricity? There are 2 kinds of electricity: Static Current
Electricity is the build up or movement of electrons.

3. Electrons are... negatively charged
orbit around (outside of) the nucleus
are able to move between atoms, through a piece of metal

4. Static Electricity
The buildup of negative charges (electrons) on surfaces of materials.
Materials with greater electron attraction will take electrons from other objects
+ -
- +
+ -
- +
+ -
+ -
Neutral
Electron build up on one side

5. Law of Electric Charges
Opposite charges will ATTRACT
Like charges will REPEL
Neutral objects will ATTRACT to charged (positive OR negative) objects + - + +

6. Electrostatic Series
Weak hold on electrons
Human Hands
Glass
Human Hair
Nylon
Wool
Silk
Aluminum
Cotton
Wood
Hard Rubber
Nickel
Silver
Gold
Polyester
Plastic
The electrostatic series tells us which material will be losing electrons and which will be gaining.
weak hold = losing
strong hold = gaining
Strong hold on electrons

7. Charging By Friction During Before After + - + - - + - + - + - +
neutral
neutral
Positive
Negative

8. Electroscope
We can use an electroscope to tell if static electricity is present.