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Magnetism
lorenaamayagarcia
Created on March 4, 2018
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Transcript
MAGNETISM
WHAT IS A MAGNET?
A MAGNET is an object which can attrack certain types of metals, such as iron. The ability to attrack magnetic materials is called MAGNETISM.
Magnets
Non-magnetic objects
Magnetic objects
A wooden ruler
A steel paperclip
A bone
Magnetism
A tin can
An aluminium can
A lead pencil
A cobalt coin
A gold bar
An iron key
A silver ring
A copper ketle
Nickel knife
A plastic spoon
A bronze bell
A zinc nail
A brass screw
INDUCED MAGNETS
NATURAL MAGNETS
MAN-MADE MAGNETS
Types of magnets
ELECTROMAGNETS
PERMANENT MAGNETS
Repel
Attract
Poles
If you place two magnets with the opposite poles together, they will attract each other.
If you place two magnets with the same poles together, they will repel each other.
MAGNETIC FIELD
The area around a magnet where it exerts its force is called a magnetic field.
Magnetic field
Magnets all around us
Magnets around us
COMPASS
THE EARTH
Hairdryer
Loudspeaker
MRI scanner
Magnets around us
Hard disc
Microphone
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