GEOLOGY

Detailed explanation-1: -As this roiling mass of metal moves around, it generates electrical currents hundreds of miles wide and flowing at thousands of miles per hour as Earth rotates. This mechanism, which is responsible for maintaining Earth’s magnetic field, is known as the geodynamo.

Detailed explanation-2: -Scientists know that today the Earth’s magnetic field is powered by the solidification of the planet’s liquid iron core. The cooling and crystallization of the core stirs up the surrounding liquid iron, creating powerful electric currents that generate a magnetic field stretching far out into space.

Detailed explanation-3: -Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field. The piece of iron has become a magnet.

Detailed explanation-4: -Earth’s magnetic field, generated by swirling iron currents in the liquid outer core, is pulling at the inner core, causing it to spin.

Detailed explanation-5: -Magnetic fields arise due to the movement of the liquid metal within Earth’s outer core. The molten metal generates electricity as it moves, and that in turn creates most of Earth’s magnetism. These fields act like the unseen forces of a magnet.