Question

Explain why heating destroys the magnetism in a permanent magnet?​

Answer 1

Answer:

Excessive heat causes atoms to move more rapidly, disturbing the magnetic domains. As the atoms are sped up, the percentage of magnetic domains spinning in the same direction decreases. This lack of cohesion weakens the magnetic force and eventually demagnetizes it entirely.

Answer 2

Mark Brainliest please

Answer

When a permanent magnet is heated strongly (to red heat, approximately), the atoms in the magnetic domains can vibrate strongly enough to become disordered. This randomizes the orientations of the molecular-level magnetic fields that make up the domains’ fields, and thereby destroys the domains.

This phenomenon was investigated by Pierre Curie. The temperature at which this happens, for a given kind of magnetic material, has been named the Curie temperature, or Curie point, in his honor.