This presentation is useful for ICSE Class IX and CBSE students to understand the concepts of magnetism.

2. There are many legends that tell us
about the discovery of magnets.
One of the most common, is that of an
elderly shepherd named Magnets, who
was herding his sheep in an area of
Northern Greece called Magnesia,
about 4,000 years ago.
It is said that both the nails in his shoes
and the metal tip of his staff became
firmly stuck to the large, black rock on
which he was standing. This type of
rock was later named magnetite, after
either Magnesia or Magnets himself.

3. What is Magnetism?
Magnetism is the
force of
attraction or
repulsion of a
magnetic
material due to
the arrangement
of its atoms,
particularly its
electrons.

5. Artificial Magnets

6. PROPERTIES OF MAGNETS
Magnets attracts small pieces of iron towards it.
A freely suspended magnet points in North-
South Direction.
Like poles repel, unlike poles attract.
Magnetic poles exists in pairs.
It can magnetize another piece of iron when
rubbed with it.

7. Magnets attracts small pieces of iron towards it

8. A freely suspended magnet points in
North-South Direction

9. Like poles repel, unlike poles attract

10. Magnetic poles exists in pairs

11. It can magnetize another piece of iron
when rubbed with it

14. Magnets are in most electronic devices, in fact,
anything that has a motor uses a magnet.
They are used to slow
down roller coasters
and subways.
More uses of magnets are found every day!

16. Magnetic Induction

19. Earth is a huge Electro Magnet

20. Patterns of Lines

21. Tracing of magnetic field using compass

22. ANY QUERIES