1. A Magnet’s Powers Chapter 21

2. Magnetic Materials Materials that are attracted to a magnet are magnetic.

3. Examples of magnetic materials are metals such as iron, steel and nickel. iron nails steel spoon and knife

4. Non-magnetic Materials Materials that are not attracted to a magnet are non-magnetic.

5. Examples of non-magnetic materials are… … metals such as gold, aluminium, silver and copper. gold brooch copper container aluminium earrings

6. … all non-metals such as plastic, wood, paper, glass and clay.

7. Every magnet has two poles, regardless of the shape. Where do you think are the poles of these magnets?

8. Strong Ends of a Magnet A magnet’s attraction is strongest at its poles.

9. Poles of a Magnet A magnet that is allowed to turn freely will always come to rest in the North-South direction. South North S N N S

10. How does a magnet help us find direction?

11. The pole that always points to the North is called the North-seeking pole or N-pole. The pole that always points to the South is called the South-seeking pole or S-pole. N-pole S-pole N S

12. Like Poles Repel When the same poles of two magnets are brought together, the magnets push one another away. N S N S

13. Unlike Poles Attract When the N-pole of one magnet is brought near the S-pole of another, the magnets attract each other. N S N S

14. Magnets get weaker if they are… hammered dropped heated

15. The more we care for our magnet, the longer it will last.