Chapter-13
1. Magnetic material: The materials which get attracted towards a magnet are magnetic – for example, iron, nickel or cobalt.
2. Non-magnetic material: The materials which are not attracted towards a magnet are non-magnetic.
3. Natural magnet: magnetite.
4. Magnet: The substances having the property of attracting iron are now known as magnets.
5. Poles of magnet: There are two ends of magnet are called its poles.
Poles are there in magnet: There are two poles.
- North pole
- South pole
5.Artificial magnets: The magnets are made from iron piece are known as artificial magnets.
6. Type of magnets: There are two types of magnets.
- Natural magnets
- Artificial magnets
7. Artificial magnets according to shape: Artificial magnets according to shape:-
(1) Bar magnet
(2) horse-shoe magnet
(3) Cylindrical magnet
(4) ball-ended magnet
8. Properties of magnet: Properties of magnet:-
- It attracts magnetic material like iron, nickel, and cobalt.
- Opposite poles of two magnets attract each other whereas similar poles repel one another.
9. Poles of a bar magnet located: The poles of a bar magnet are located at its two ends.
10. Bar magnet: First of all we would hang the bar magnet to tie with a thread at its.
11. Iron strip: Iron strip is rubbed by one end of magnet for 30 to 40 times after that it makes into a magnet.
12. Compass used to find directions: There are two ends in each magnetic needle are usually pained in a different colour. Its needle indicates the north-south direction when it comes to rest. The compass is then rotated until the north and south marked on the dial are at the two ends of the needle.