1. Review

2. You should be able to: Identify (1-3) Define or Describe (4-7) Explain or discuss (5-8) Alternating current Direct current How a battery works

3.  alternating current  direct current  kinetic energy  electrical energy  cathode  generator  anode  Electrolyte  magnet http://www.youtube.com/watch?v=mozGbPNFf8chttp://www.youtube.com/watch?v=mozGbPNFf8c (review) http://www.youtube.com/watch?v=JZjMuIHoBeghttp://www.youtube.com/watch?v=JZjMuIHoBeg (circuits)

4.  electrons jump back and forth between atoms in the wires  Electrons change direction at over 100 times per second  electrical energy moves forward rapidly – like a wave through the wire

5.  electrons move from one atom to another in a single direction

6.  In a battery, electrons move from negative (−) to positive (+)  Anode - inner part of the battery where electrons are located  Cathode: center of a battery where positively charged ions are located.  electrolyte –  pasty mixture between anode & cathode  keeps electrons from moving thru.  Neutralization = empty battery  All of the electrons found a positively charged ion and made neutral atoms

7.  http://www.youtube.com/watch?v=g17f9J1- r-k (ac versus dc) http://www.youtube.com/watch?v=g17f9J1- r-k