Analogy:
1. Natural magnet: Magnetic stones. Artificial magnet: _______
2. Magnetic substance : Attracted by magnets Non magnetic substance : _____
3. Repel to each other: Like poles. Attract to each other : ______
4. Demagnetisation : _________ Making magnets: Rubbing with one end to another end without changing direction.
5 Electromagnet: Magnetic crane. Ordinary magnet: _______