Question 31643 • 26/27 EARTH & SPACE SCIENCE A
Earth’s magnetic field is generated by the geodynamo: moving liquid metal in the outer core creates electric currents. Earth’s rotation helps organize that motion into patterns that sustain the field. Weather, Earth’s orbit around the Sun, and rock solidifying in the outer mantle do not generate the field; the inner core is solid, not liquefying.
AI-written and checked against the verified answer.