Magnetism. A magnet is an object or device that produces a magnetic field. Magnet attracts objects made of nickel, iron and cobalt. A magnet has 2 poles, the North Pole and the South Pole. Attack. Opposite poles of two magnets always attract each other. Repel. Like poles of two magnets always repel each other. Repel. Big Brother. The Earth also behaves like a magnet. South pole of the Earth’s magnet is in the geographical North. North Pole of the Earth’s magnet is in the geographical South. What? A freely suspended magnet always rests in the North South direction. This is because opposite poles attract each other. The End.