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Monday, September 20, 2010

10 points again

I'm sorry...I had to
  • Magnetic force = force that acts at a distance
  • magnetic field = distribution of magnetic force in a region
  • north and south poles on a magnet
  • north repels north, south repels south, north and south attract each other
  • test compass is used to map a field
  • earth is like a magnet
  • magnets also attract metals that are not magnets (iron, nickel and cobalt)
  • these are called ferromagnetic metals
  • right- and left-hand rules
  • ^ tbh I didn't quite get these rules

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