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Grade 8Magnets
Which of the metals below are magnetic metals?
Aluminium(Al
)Silver (Ag)
Iron
(Fe
)
Gold (Au)
Nickel (Ni)
Cobalt (Co)
Copper (Cu)
Zinc(Z
n)
Magnesium (Mg)
Al ZnAg
Cu
Au
Mg
N
S
Fe
NiCo
• A magnet has the property of attracting metals.
• There are three magnetic materials:• Iron (steel)• Cobalt• nickel
Shapes of magnets
• There are different types of magnets:• Bar-maagnet
• U-shaped magnet
• Round magnets
Poles of the magnet
• Any magnet is made up of two poles• The north pole (N)• The south pole (S)
Poles interactions
• Similar poles of different magnets will repel each other. (N-N and S-S)
• Opposite poles will attract each other. (N-S andS-N)
What happens when you break a magnet?
• The poles of a magnet can never be separated.
• When you break a magnet, it forms two new magnets.
• A magnet is made up of many small magnets
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