Question

Answer of this second
question

Answer 1

Here is your answer
The Earth's magnetic field is believed to be generated by electric currents in the conductive iron alloys of its core, created by convection currents due to heat escaping from the core.
My exam was today as I am also in 9th class icse

Answer 2

Please mark it as brainliest answer

In Experiment 1, when you bring the compass near a strong bar magnet, the needle of the compass points in the direction of the south pole of the bar magnet.

In Experiment 2, when you move the north pole of a magnet toward the south pole of the other magnet, the two magnets attract.

This shows the existence of earth magnetic field