What is creating earth magnetic field

The Earth's magnetic field is believed to be generated by electric currents in the conductive material of its core. Created by convection currents due to heat escaping from the core.

How does the Earth create a magnetic field?

The Earth's magnetic field is created by the rotation of the Earth and Earth's core. It shields the Earth against harmful particles in space. The field is unstable and has changed often in the history of the Earth.