GENERAL GEOLOGY

Detailed explanation-1: -It is the site of violent convection. The churning metal of the outer core creates and sustains Earth’s magnetic field. The hottest part of the core is actually the Bullen discontinuity, where temperatures reach 6, 000° Celsius (10, 800° Fahrenheit)-as hot as the surface of the sun.

Detailed explanation-2: -The Earth’s outer core is in a state of turbulent convection as the result of radioactive heating and chemical differentiation. This sets up a process that is a bit like a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy.

Detailed explanation-3: -Today’s magnetic shield is generated in Earth’s outer core. The intense heat in Earth’s dense inner core causes the outer core-composed of liquid iron-to swirl and churn, generating electric currents, and driving a phenomenon called the geodynamo, which powers Earth’s magnetic field.

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.