1. -FORCE & MOTION

3. 3.Magnetic force: Is the force produced by a magnet.
Magnetic force acts at a distance and cannot be seen.
magnetic: having the property of attracting iron objects .
Magnets have poles (north and south).
The pulling force of the magnet is strongest at the poles.
If a bar magnet can move freely, its north seeking pole always points North, and its south seeking pole always points South.

4. Unlike poles (N-S) attract or pull towards each other.
Like poles (N-N or S-S) repel or push away from each other.
The closer the objects, the greater the magnetic force.

5. Iron, nickel, and a few other metals are attracted to magnets
Iron, nickel, and a few other metals are attracted to magnets. Not all metals will be magnetic.
A magnet produces a magnetic field around itself and affects certain objects. Magnetic force can act without touching objects.
For hundreds of years people used magnets to find direction
The needle of a compass is a magnet. It moves because of Earth's magnetism. ( Earth is a giant magnet).

6. Where is the force of magnetism the greatest in this picture and how do you know?

7. strongest force of attraction