The Earth's magnetic field is generated by:

A) salty water moving through the deep parts of the crust
B) convection currents in the asthenosphere
C) movement of iron and electrical currents within Earth's outer core
D) aligned magnetic minerals within Earth's inner core

Earth's Magnetic Field

The geomagnetic field that extends from the Earth's interior into space, where it meets the solar wind, a stream of charged particles emanating from the sun.

Outer Core

The liquid layer of the Earth's core that lies beneath the mantle and surrounds the inner core, composed mostly of iron and nickel.