6.6 describe experiments to investigate the magnetic field pattern for a permanent bar magnet and that between two bar magnets

Iron filings

1. Place a bar magnet under a piece of paper
2. Shake iron filings onto the piece of paper
3. The shape of the magnetic field can be seen around the bar magnet because of the iron filings attracted to it

Plotting compass

1. Place a bar magnet on a piece of paper
2. Trace around the bar magnet
3. Surround the bar magnet with plotting compasses, arranged in a semicircle; i.e. starting at north and curving around to south (the needle of each plotting compass lines up with the field line, pointing from north to south)
4. Dot where the arrow point sits at each compass
5. remove te compasses
6. join up the dots

(NOTE: this really is not complicated at all, i just couldn't work out an easy way of describing it)