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11 Cards in this Set

  • Front
  • Back
Made of

Protons have positive charge, electrons have negative charge.
Neutrons are neutral.
Electrons move from atom to atom.
More electrons=Negative charge
More protons=Positive charge
Attraction between oppositely charged particles.
Same charge=repel each other
Electric Fields
Area over which an electric charge exerts a force.
Strongest near charged particle.
--See Figure 1-3
Law of conservation of charge
Charge is never created or destroyed. Charge is transfered from one object to another.
Friction Method
-Rubbing two objects together causes charge.
-Balloon & hair
Conduction Method
-Direct contact
-electrons flow from one object to the other
-conductors let charges move freely
-insulators don't
Induction Method
-rearrangement of electric charges
-neutral comes close to charged
-no contact
Static electricity
transfer of electrons from one object to another w/o further movement
-buildup of electric charges on an object
Elctric discharge
the loss of static electricity as electric charges move off an object
-example: lightning
lightning rods/grounding
put on top of buildings as lightning protection
-earth is good conductor; easily accepts or gives up electric charges
-lightning rods attached to ground through wire
-lightning goes into earth when in contact w/ rod
-detects electric charges
-neutral: leaves together
+/- repel eachother