Magnets have two poles – North and South.
Some substances can be easily magnetised.
Like poles repel each other and unlike poles attract each other.
The Earth also has a magnetic field.
A compass can be used to find the magnetic north pole and help us find our direction.
The Earth’s magnetic field protects us from being bombarded by high energy charged particles which are emitted by the Sun.
The Aurorae are an effect of the Earth’s magnetic field.