It’s electric(don’t worry, I won’t play the song)
Electrons Are a small part of an atom They are found swarming around the nucleus of atom They carry a negative charge When they move from atom to atom that is electricity
Protons and Neutrons Are found in the nucleus of the atom They stay put Protons are positive, neutrons are neutral Normally, atoms are neutral due to equal number of protons and electrons If you remove electrons from an atom, the atom becomes positive Remember nuclear energy?
Electricity Two forms: Static: When electrons build up on the surfaces of objects and then jump away =(zap!) Current: When electrons flow in a conductor (usually metal) The above are NOT opposites!
Charge Is a force that affects parts of atoms Things can have a positive charge, a negative charge Neutral means zero charge Like charges repel Unlike charges attract “opposites attract” Electroscope Balloon on wall Rolling tube H2O
Electric field The space around an object that is electrified or charged and exerts a force on other objects. Fluorescent tube and van de Graff
Friction method By rubbing 2 different materials together, electrons can sometimes build up on one material All the electrons on that material try to get away from each other as best as they can When they jump away= electric discharge. Van de Graaf generator
Positive / negative charges Objects with a negative charge have an excess of ___________on their surface Objects with a positive charge have a(n) _________ of electrons on their surface
Conduction When charges can flow from one object to another during contact or when they are close enough They need to touch: conduction= contact
Induction When electric charges are rearranged No contact is needed, things only come near each other link Balloon on the wall
links Electrophorus Induction Fun with a Van de Graaf Generator