1. QOD: What part of the atom creates an electrical charge?
Electricity
QOD: What part of the atom creates an electrical charge?

2. The Atom Nucleus Electrons Center of atom
Contains + charged protons and neutral neutrons
Electrons
Orbit nucleus
Have a - charge

3. Electric Charges
Property that causes protons & electrons to attract or repel each other
Opposite charges(+ -) attract each other while like charges repel(+ + or - -) due to an electric force
Atoms can lose or gain electrons, becoming an ion
SI unit of electric charge is the Coulomb(C)
It takes 6.24 X 1018 electrons to produce 1C
Camera flash ~ 0.025C / Lightning ~ 15C

4. Static Electricity
The study of the behavior of electric charges, including how charge is transferred between objects
Static discharge is when a pathway forms suddenly through which charges can move

6. 3 Ways to electrically charge objects
1. By friction, when electrons are transferred by friction from 1 object to another, such as rubbing a balloon to your hair

7. 2. By conduction, when electrons are transferred from 1 charged object to another uncharged object by direct contact without rubbing (friction)

8. 3. By induction, when electrons are caused to gather or disperse by the presence of a nearby charge

9. Static Electricity Demos – Balloons & John Travoltage

10. Final Thoughts on Static Electricity
How do weather conditions affect static electricity (dry, cold days vs. humid days; storms)?
How does today’s topic relate to gas station pump safety? What steps can you take to protect yourself?