Magnetism: an investigation

What is a magnet?

Is the Earth a magnet?

What happens inside a magnet?

What is a force field?

How does its shape affect the poles of a magnet?

Are all metals magnetic?

Can a magnet work through things?

In what other ways do we use magnets?

Are there other invisible forces?

How are magnetism and electricity connected?

What is an electromagnet?

Can a magnet make electricity?

How do electrical generators work?