GEOLOGY

Detailed explanation-1: -Four characteristics associated with magnets are : Attracts magnetic material. Poles always exist in pairs. Unlike poles attract and like poles attract each other.

Detailed explanation-2: -The crust of the Earth has some permanent magnetization, and the Earth’s core generates its own magnetic field, sustaining the main part of the field we measure at the surface. So we could say that the Earth is, therefore, a “magnet."

Detailed explanation-3: -A magnet always has two poles: north and south. The poles never exist by themselves. Like poles repel and opposite poles attract.

Detailed explanation-4: -Magnet has two poles North and South Pole. Same poles of two magnets repel each other. Opposite poles of two magnets attract each other.