GEOLOGY

Detailed explanation-1: -The north and south poles of a bar magnet attract paper clips.

Detailed explanation-2: -The effect of magnetism is the strongest at the ends of a magnet, i.e. at the poles of the magnet. Hence the clips will mostly stick to the poles of the magnet.

Detailed explanation-3: -All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.

Detailed explanation-4: -The two ends of a permanent magnet are called the poles of a magnet.

Detailed explanation-5: -Magnets have the ability to attract certain metals like iron and steel. Metal paper clips are made from steel and should be attracted by a magnet.