GEOLOGY

Detailed explanation-1: -In an unmagnetized object, like the initial piece of metal in our experiment below, all the magnetic domains are pointing in different directions. When the metal becomes magnetized, which is what happens when it is rubbed with a strong magnet, all like magnetic poles line up and point in the same direction.

Detailed explanation-2: -In a material that is not magnetized, the magnetic domains point in random directions. In a magnetized material, all or most of the magnetic domains are arranged in the same direction. The magnetic fields of the domains are aligned. A material can be a strong magnet if its magnetic domains align.

Detailed explanation-3: -Magnetic domains are always present in ferromagnetic materials due to the way the atoms bond to form the material. However, when a ferromagnetic material is in the unmagnetized condition, the magnetic domains are randomly oriented so that the magnetic field strength in the piece of material is zero.

Detailed explanation-4: -Each domain behaves like a tiny magnet with a north and a south pole. In an unmagnetized piece of iron, these domains are arranged randomly. The magnetic effects of the domains cancel each other out, so this piece of iron is not a magnet.

Detailed explanation-5: -When there is no external magnetic field present, the domains are also oriented randomly so that there is no net magnetic field. However, when an external magnetic field is present, the domains will rotate and align with the external magnetic field.