Oran uses a ball, a bar magnet, and a compass to create a model of earth’s magnetic field. how could he best use these materials?

Explanation:

In order to create a model of Earth's magnet field from ball , bar magnet and compass. What Oran can do , by sticking the ball with bar magnet.

The magnet joined to the ball have magnetic field running from one pole to another. This magnetic field can be considered as magnetic field of ball which Oran assumes to be model of earth.

When he will place a compass in its vicinity of the ball with bar magnet , the arrow of the compass will point towards the north pole of the the magnet.

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