GEOLOGY

Detailed explanation-1: -Some objects can be magnetized by rubbing one pole of an existing magnet in one direction along the object. Why? The motion of the existing magnet against the object aligns the magnetic domains of the object.

Detailed explanation-2: -In most materials, electrons spin randomly. But in magnets the electrons group into magnetic domains, created whenever the spin of a number of electrons line up in the same direction. This happens in iron, nickel, or cobalt. If a majority of magnetic domains match spins, then that material is said to be magnetic.

Detailed explanation-3: -Paramagnetism: Paramagnetism is the opposite of diamagnetism. Paramagnets attract magnetic forces in the presence of a magnetic field. They are generally temporary magnets-they do not have their own magnetic fields but will become magnetic in the presence of one.

Detailed explanation-4: -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. The piece of iron has become a magnet.