GEOLOGY

Detailed explanation-1: -Significance. Earth’s magnetic field deflects most of the solar wind, whose charged particles would otherwise strip away the ozone layer that protects the Earth from harmful ultraviolet radiation. One stripping mechanism is for gas to be caught in bubbles of magnetic field, which are ripped off by solar winds.

Detailed explanation-2: -Magnetic fields deflect the motion of particles possessing a net electrical charge. When such charged particles encounter a magnetic field they experience something called the “Lorentz Force, ” which is directed at right angles to both the magnetic lines of force and the direction of motion of the particle.

Detailed explanation-3: -Generated by the motion of molten iron in Earth’s core, the magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun. It also provides the basis for navigation with a compass.

Detailed explanation-4: -Earth’s magnetic field surrounds the planet and extends into space, forming Earth’s magnetosphere. The magnetosphere deflects most solar particles before they reach Earth’s atmosphere, and its shape constantly changes as it is bombarded by these solar particles.