Question: Why does earth behaves like a magnet ?
Ans: According to scientists, the earth’s magnetic field originates from the outer core filled with liquid iron. The liquid outer core surrounds the solid inner iron core and transfers heat to the mantel and surface via convection. The magnetic field is generated by the ‘Dynamo Effect’ which is caused by the motion of the liquid part in the core. The movement of the liquid produces a current in the moving conductor adding to the existing current.