Here's a breakdown:

* Domains: A magnetic domain is a small region within a ferromagnetic material where the magnetic moments of individual atoms are aligned in the same direction.

* Unmagnetized Object: In an unmagnetized object, the domains are randomly oriented. Their magnetic fields cancel each other out, resulting in no net magnetic field.

* Magnetized Object: When a ferromagnetic material is placed in a magnetic field, the domains align themselves with the external field. This results in a net magnetic field and the material becomes magnetized.

So, the alignment of domains is what gives a material its overall magnetic properties.