1. 10.1 Exploring Static Charge

2. Vocabulary Words
electricity
static charge
charging by friction
electrostatic series
insulator
conductor
semi-conductor
ground

3. Why did the gardener plant a light bulb?
He wanted to grow a power plant.

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

5. Static charge (Static electricity)
Electric charge that remains “static” or doesn’t move
Electrostatics
The study of electric charge

6. Charging by Friction
Involves the transfer of electric charge by rubbing or friction (e.g. walking across a carpet, combing your hair)

7. Causes of Electric Charges
Particles that carry electric charges can be neither created nor destroyed
Any net charge on a solid object, whether it is positive or negative, results from the transfer of electrons between this object and another object

8. Causes of Electric Charges cont’d
Compared with a neutral object, an object with a deficit of electrons (fewer electrons than protons) has a positive charge
Compared with a neutral object, an object with an excess of electrons (more electrons than protons) has a negative charge
Different materials hold on to their electrons with different strengths

9. An Electrostatic Series
The Electrostatic Series – Used to determine the kind of electric charge produced on each substance when two substances are rubbed together.
Substances high in the list lose electrons, and become positively charged (net charge)
Substances lower in the list gain electrons and become negatively charged (net charge)
The closer the substances are on the list, the weaker the ability to transfer electrons
e.g. Predict what will happen when (i) glass is rubbed with cotton, and (ii) rubber balloon is rubbed with wool.
Material
Strength of Hold on Electrons
Glass
Weak
Strong
Human hair
Nylon
Wool
Fur
Silk
Cotton
Lucite (a clear plastic)
Rubber balloon
Polyester
Foam
Grocery bags (low density polyethylene)
Ebonite (hard form of rubber)