GEOLOGY

Detailed explanation-1: -When we heat a magnet at a high temperature, the heat energy frees the tiny magnets from their ordered orientation. This reduces or destroys the ordering of the tiny magnets. As a result, the magnet loses its magnetism, i.e. it gets demagnetised.

Detailed explanation-2: -A magnet subjected to heat experiences a reduction in its magnetic field as the particles within the magnet are moving at an increasingly faster and more sporadic rate. This jumbling confuses and misaligns the magnetic domains, causing the magnetism to decrease.

Detailed explanation-3: -At around 80 °C, a magnet will lose its magnetic force and it will become demagnetized permanently if exposed to this temperature for a period, or if heated above its Curie temperature. Heat the magnet even more, and it will melt, and eventually vaporize.

Detailed explanation-4: -Permanent magnets can lose their magnetism if they are dropped or banged on enough to bump their domains out of alignment. Heating a magnet above the Curie temperature causes the magnetic domains to be disrupted permanently. Mild heating causes a reduction in the magnetism.

Detailed explanation-5: -Applying heat to a magnet causes the magnet’s electrons to dance and transition into higher energy states. This, in turn, forces the electrons into different alignments. Since the electrons are no longer aligned, the magnetism of the object will decrease.