[Force] [Magnets] [Friction] [Gravity and Upthrust]

Magnets are pieces of metal that attract iron

Different types of magnet

 

bar_magnet
Bar magnet

horseshoe_magnet

Horseshoe magnet

button_magnet
Button magnet

 

Every magnet has two poles

N= North seeking pole

S= South seeking pole

The poles of a magnet is where the magnetic force is the strongest.

horseshoe-magnet

Iron filings sticking to the
poles of a horseshoe magnet

 

A magnet has lines of magnetic force around it

magnet2

When we sprinkle iron filings on to a piece of paper laid over the magnet we can see the magnetic field lines

 

For a demonstration click here

mag_field lines

Rules about magnetic poles

ks2_forces_clip_image001
Poles that are different (unlike poles) attract each other
ks2_forces_clip_image001_0000
Poles that are the same (like poles) repel (push) apart