Review Directions: Copy and Answer the following statements using the terms Series or Parallel Circuits. 1. Only one path for the electricity. 2. Dependent paths. 3. How your house is wired. 4. Independent current paths. 5. Can turn off one light without others turning off. 6. If you turn off one light, all the lights turn off. 7. More than one path for the electricity to flow.

Ohm’s Law and Electrical Power Using the formula I=V/R and P=V(I). Copy and Calculate the following problems. V=12 V R=1 ohm I=? V=? P=2 watts I=6 A V=? R=1 ohm I=12 A V= 6 V R=? I=2 A V= 7 V P=? I= 49 A V= 8 V R= 2 ohm I=? V=? R= 7 ohm I= 7 A V= 36 V P= 8 watts I=? V= 25 V R=? I=5 A V=? P= 10 watts I= 10 A

BrainPop: Electricity http://www.teachertube.com/view_video.php?viewkey=30f4d56a2f1e1e760e53 Go to the link titled Current Electricity.

Brain Pop: Magnetism http://glencoe.mcgraw-hill.com/sites/0078802482/student_view0/brainpop_movies.html Go to the link titled Magnetism

Magnet A magnet is something that can attract metal or another magnet. A magnet can also repel another magnet. **Draw the examples

The magnetic field “the arrows” travel from the north pole to the south pole. A compass works off a magnet. Draw the magnet and its magnetic field.

Properties of magnets: • Magnets have two opposite poles: north and south. • If divided, each part of a magnet will also have a north and south pole (you can never make an unpaired pole) • Magnets exert forces on other magnets, called “Magnetic forces” Opposite poles attract (North attracts South) Like poles repel (North repels North, etc) Permanent magnets can lose its force if heated or dropped. When a permanent magnet is cut into smaller pieces, each piece will have its own poles and became a magnet.

Permanent magnet – a magnet that retains its magnetism and does not need to be “recharged.” Lodestone and magnetite are the only two permanent magnetic substances. Temporary magnet – a magnet that occurs when near a permanent magnet, but loses its magnetism away from the permanent magnet; many metals can be temporary magnets.

Electromagnet Electromagnet—a magnet made from electricity. When electricity moves it causes magnetism. Examples: loudspeaker, doorbells, lifting metal objects, meters, toys, and motors toasters. Draw the Electromagnet on the right

Exit Slip Give three examples of an Electromagnet.