1. Magnetic Substances & Magnetic Fields

2. Magnetic Substances
A magnet is an object that can attract other objects containing iron, cobalt, or nickel.
Has two opposite poles - North and South
Similar poles repel & opposite poles attract
The magnetic field can be mapped

3. Ferromagnetic Substances
Not a magnet but something that can become magnetized by hitting, heating, or touching it with a magnet OR by adding an electrical charge (electromagnet)
Is attracted by a magnet
Must contain one of the following: iron, nickel or cobalt
The magnetism can be turned on and off.

4. Non-magnetic Substance
Cannot be magnetized
Glass, plastic, rubber or wood
Work well as insulators for electrical wires

6. Mapping Magnetic Fields
Rules:
The magnetic field lines can never cross
Always flow from North to South
The closer the lines, the stronger the attraction

9. Compass The needle of the compass is magnetic
Red (or any color) tip of the needle is considered North and will always be attracted towards its opposite the South