GEOLOGY

Detailed explanation-1: -Permanent magnets emit a magnetic field without the need for any external source of magnetism or electrical power. Temporary magnets behave as magnets while attached to or close to something that emits a magnetic field, but lose this characteristic when the source of the magnetic field is removed.

Detailed explanation-2: -A temporary magnet is a magnet made of soft iron, that is usually easy to magnetize; however, temporary magnets lose most of their magnetic properties when the magnetizing cause is discontinued.

Detailed explanation-3: -An electromagnet is called a temporary magnet because it produces magnetic field so long as current flows in its coil.

Detailed explanation-4: -Changing temperatures Magnets can lose their magnetic charge to temperature variations. Temperature extremes can either cause temporary or permanent losses. When heat is applied to magnets, they may temporarily lose strength but regain this force after being cooled down to their optimal operating temperatures.

Detailed explanation-5: -A permanent magnet is made of steel and loses its magnetism easily.