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

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Presentation transcript:

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

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

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

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

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

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

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

Static Electricity Demos – Balloons & John Travoltage

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?