- A Greek shepherd discovered magnetism around 4,000 years ago when the iron tip of his stick was attracted to a rock in Magnesia, Greece. - Magnets attract materials like iron, cobalt, and nickel. There are natural and artificial magnets. - A magnet has two poles - a north pole and a south pole. Opposite poles attract and similar poles repel.

1. PREPARED BY :-
Mr. AVNEESH SAXENA
T.G.T.(SCIENCE)
CLASS-VI
K.V. NO.02, AFS,
CHAKERI,
KANPUR
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2. CHAPTER - 13
FUN WITH MAGNETS
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3. -:Discovery of Magnets:-
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 He used to take his herd of sheep and goats to the nearby
mountains for grazing. He would take a stick with him to
control his herd. The stick had a small piece of iron
attached at one end.
 One day he was surprised to find that he had to pull hard
to free his stick from a rock on the mountainside. It
seemed as if the stick was being attracted by the rock. The
rock was a natural magnet and it attracted the iron tip of
the shepherd's stick. It is said that this is how natural
magnets was discovered.
 Roughly 4,000 years ago, a Greek shepherd named
Magnes is said to have been tending his sheep in a region
of northern Greece called Magnesia.
A Natural Magnets On A Hillside!

4. -: Magnet :-
Magnet is a material which attracts materials like iron, cobalt, nickel etc.
 There are two main types of magnets.
 They are natural magnets and artificial magnets.
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5. -: Magnetic and Non Magnetic Materials :-
 Magnetic Materials are materials which are attracted by magnets.
Eg :- Iron, Cobalt, Nickel, Steel etc.
 Non Magnetic Materials are materials which are not attracted by
magnets. Eg :- Wood, Plastic, Rubber, Glass etc.
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6. -: Shapes of Magnets :-
Magnets are of different shapes. They are bar magnet, horse shoe magnet,
cylindrical magnet etc.
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7. -: Shapes of Magnets :-
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8. -: Poles of a Magnet :-
 The two ends of a magnet where the attraction is maximum are called
the poles of the magnet.
 A magnet has two poles called north pole and south pole.
 A freely suspended bar magnet points in the North – South direction.
 The end of the magnet which points towards the north is called the North
pole.
 The end of the magnet which points towards the south is called the South
pole.
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9. Sunday, January 1, 2023 Mr. AVNEESH SAXENA 9
 The Magnetic Poles always exist in pairs.
 When an attempt is made to separate the magnetic poles by breaking a magnet , the it is
observed that the two parts become a complete magnet.
 New magnetic poles are developed at broken ends.
-: Poles of a Magnet :-

10. -: How to Make a Magnet :-
Activity :-
 Take a rectangular piece of iron, a needle, a blade or an iron nail.
 Keep it on a table.
 Take a bar magnet and keep one of its pole on one end of the piece of iron.
Move it along the piece of iron till the other end.
 Then lift the magnet and repeat this process 30 to 40 times.
 Then the piece of iron becomes a magnet.
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11. -: Magnetic Compass :-
 A magnetic compass is a device used to find directions.
 It has a metal case with a glass cover.
 A magnetic needle which can rotate freely is pivoted inside the case.
 It also has a dial marked with directions inside it.
Metal case
Glass cover
Magnetic needle
Dial
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12. -: How to make a Magnetic Compass :-
Activity :-
 Magnetise an iron needle with a bar magnet.
 Insert the needle through a piece of thermocole.
 Float it in a cup of water.
 The needle points in the North – South direction.
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13. -: Attraction and Repulsion Between Magnets :-
The opposite poles of two magnets attract each other.
The similar poles of two magnets repel each other.
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14. -: Properties of Magnets :-
i) Magnets attract materials like iron, cobalt, nickel etc.
ii) A freely suspended magnet points in the north – south direction.
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15. -: Properties of Magnets :-
iii) The opposite poles of two magnets attract each other and the similar poles
of two magnets repel each other.
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Similar Poles
Opposite Poles

16. -: A Few Cautions About Magnets :-
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Precautions to protect magnets from losing their magnetic properties
 Never drop magnets from heights.
 Never heat a magnet.
 Do not hammer a magnet.

17. -: A Few Cautions About Magnets :-
 Magnets should be kept away from radio, television, music systems,
computers, mobile phones, cassettes, compact discs etc.
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18. -: A Few Cautions About Magnets :-
 Store your magnets safely.
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 It is used in a Compass to find directions
 It is used in factories for lifting heavy masses of iron.
 It is used in construction of telephones, electric bells etc.
-: Uses Of Magnets:-

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 It is used to separate iron & steel from non-magnetic materials.
 Use a Magnet for Pacemakers, Magnetic Resonance Imaging (MRI) etc.
-: Uses Of Magnets:-

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Laptop
-: Application of Magnets :-

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23. Sunday, January 1, 2023 Mr. AVNEESH SAXENA 23
Artificial Magnet was discovered in Greece. A)True B) False
Answer
Verified
Hint: To solve this question, we should know where the magnets were discovered first and what type of magnets were
discovered there. If Greece is the first place where artificial magnets were discovered then the statement is true. But if
Greece is not the place where artificial magnets were discovered, then the statement is wrong.
Complete step by step answer: Artificial magnets were discovered by William Gilbert in the sixteen hundreds in
England. The first natural magnet was discovered by the Greeks.
So, the correct option is (B) i. e, False.

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