1. Static Electricity

2. What is Static Electricity
You walk across the rug, and reach for a doornob…ZAP! You get a shock
Come inside from the cold pull off your hat…BOING! All your hair stands on end. Why does this only happen in the winter?
STATIC ELECTRICITY

3. The Atom
An atom is made up of protons (+), neutrons (0), and electrons (-)
A neutral atom has an equal
number of ELECTRONS and PROTONS
An atom that has lost or gained electrons is called an ION
Remember: only ELECTRONS can be gained or lost

4. Neutral Objects & Charged Objects
A neutral object does not have any charge.
This means that the number of ELECTRONS are equal to the number of PROTONS
A charged object has a different amount of ELECTRONS compared to PROTONS

5. Law of Electric Charges
The law of electric charge states:
Objects that have like charges repel each other
Objects that have opposite charges attract each other

6. Law of Electric Charge This means that: Object 1 Object 2
Attract of Repel
Positive
Negative
Charged
Neutral

7. How is Static Electricity Created?
Friction
Rubbing 2 different substances together, the substances can be given an electric charge
One substance loses electrons, the other gains
The substance that loses the electrons will have a POSITIVE charge and the substance that gains electrons will have a NEGATIVE charge.

8. How is Static Electricity Created?
Some substances have a strong hold on electrons and others have a weaker hold
Substances with a weak hold will LOSE electrons
Substances with a strong hold will GAIN electrons

9. Electrostatic Series Determines the kind of electric charge produced
on each substance when 2
substances listed are
rubbed together

10. What Will Happen? If glass is rubbed with polyester,
the glass will become POSITIVE
and the plastic will become
NEGATIVE
If ebonite is rubbed with fur.
Ebonite becomes NEGATIVE
Fur becomes POSITIVE

11. How is Static Electricity Created?
2 – Conduction
Two objects with different amounts of charge come in contact
ELECTRONS move from one object to another

12. How is Static Electricity Created?
Electrons always move from object with larger negative charge to objects with smaller negative charge.
Both objects will have same type and amount of charge

13. How is Static Electricity Created?
3 – Grounding
Objects with an excessive electric charge (+ or -) can have it removed by grounding
Transfer of electrons between object and large neutral object (ex. Earth).
Electrons move to charged object