1. What is the unit for distance? 2. What is the unit for volume of solid? 3. What is the numerical value for kilo? 4. Write the name for the following symbols: kL, cg, & mm 5. What is the length between two points? 6. The amount of space that matter takes up is called?

Magnetism Day 45

 Please Complete the Cornell notes as given.

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.

 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.

1.) Two magnetic north poles: attract or repel? 2.) A magnetic north and south pole: attract or repel? 3.) If three magnets are attracting each other, draw and label N and S on the three magnets. 4.) If the two magnets are repelling each other, draw and label N and S on the two magnets.

 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—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

Give three examples of an Electromagnet.