This practical book answers common questions about magnetism by looking at evidence and demonstrating its properties through a range of carefully chosen experiments that can be done in the classroom or at home. It covers such questions as 'What happens inside a magnet?', 'What is a force field?', 'Can a magnet work through things?', 'How are magnetism and electricity connected?' and 'Can a magnet make electricity?' It also includes questions for readers to investigate further on their own. Written by a highly experienced and acclaimed science writer, the book includes links to useful websites as well as glossary, index and list of further reading.