Magnets Presentation

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Magnets Presentation

• For 4th. Grade

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Vocabulary

• Magnetic Field an invisible force that rounds a
  magnet.
• Magnetite A stone that has magnetic properties
• Magnetic Poles The magnetic force located in
  the oposite ends of a magnetic object

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The Use of Magnets

• In The Ancient Greek Times

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Magnets Use in Our Society

• Magnets can be natural
• There are also electromagnets
• The last ones are used in some industries
• They can be used also in transportation.

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Properties of Magnets

• Magnets have magnetic field
• They have two poles of attraction
• Similar magnetic fields repel each other
• Unlike magnetic fields attract
• Magnets come in many sizes and shapes.
• The most power magnets are shoe horse magnets

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The Earth is a giant magnet

• Our planet is a magnet
• It has two power poles called North and South
  Poles
• Like a magnets this poles could attract or repel

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Magnetism is a Form of Energy

• Magnets are objects that attract things made of
  metal.
• There are bar magnets and shoe magnets
• Horse shoe are the stronger magnets

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History about magnets

• The ancient Greeks discover and use the first
  magnets
• They rubbed a piece of a magnetite with an amber
  cloth and produced magnetic fields.

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Earth is a Giant Magnet

• Deep inside earth there is a core of metal.
• Liquid iron inside makes earth magnetic fields.
• Earth has North and South Magnetic Poles as
  magnets does