Question

question 16
3 pts
what causes earths magnetic field?
○ electric current in wires between the poles
○ convection of iron in the core
○ it happens naturally because of earths position in the solar system
○ all of these

Explanation:

Earth's magnetic field is generated by the geodynamo effect. The outer core consists of liquid iron, which is conductive. Convection currents in this liquid iron, driven by heat from the inner core, create electric currents. These currents produce the magnetic field. The other options are incorrect: there are no wires between poles, and Earth's position in the solar system does not directly cause the magnetic field.

Answer:

Convection of iron in the core