Magnets.

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Presentation transcript:

Magnets

There are four magnetic metals Steel Iron Nickel Cobalt

The Magnetic Field All magnets have a North and a South pole The Magnetic field attract magnetic metals towards the magnet

Attraction Opposite poles attract, so North and South poles attract together

Repel The same poles repel, e.g. North repels North and South repels South

The Earth The Earth is a giant magnet It has a magnetic field protecting us from Cosmic radiation We can use compasses to find out where the North pole is!

Magnet Links http://www.edumedia.fr/m107_l2-magnet-and-compass.html Magnet animations http://www.bbc.co.uk/schools/ks3bitesize/science/physics/magnetism_intro.shtml Revision Guide http://www.sciencepages.co.uk/keystage3/year8/module22/m22quiz.php Quiz http://news.bbc.co.uk/1/hi/world/europe/5370564.stm German Monorail crashes http://science.howstuffworks.com/maglev-train.htm Magalev train http://www.vimeo.com/clip:68357