GEOLOGY

Detailed explanation-1: -The electrons in most objects spin in random directions, and their magnetic forces cancel each other out. Magnets are different because the molecules in magnets are arranged so that their electrons spin in the same direction.

Detailed explanation-2: -An induced magnet is a material that becomes a magnet when it is placed in a magnetic field. Induced magnetism always causes a force of attraction. When removed from the magnetic field an induced magnet loses most/all of its magnetism quickly.

Detailed explanation-3: -If the majority of electrons in the atom spins in the same direction, a strong magnetic field is produced. The direction of the electrons spin determines the direction of magnetic field.

Detailed explanation-4: -The only influence of magnetic field is on the ground state through the alignment of atoms. The atoms are aligned either parallel or perpendicular to the magnetic field.