Question

difference between geographic axis and geographic meridian? which is more powerful between compass needle and bar magnet

Answer 1

geographic meridean is the line passing through earth's geographic plate

geographic axis is the axis of earth's geographic plate

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Answer 2

Geographical axis is an imaginary line which goes through a large round objects like planet,natural satellite or any spherical solid body.

On the other hand geographical meridian is a half of an great imaginary circle on the surface of the earth.

Bar magnet is stronger than the compass needle because bar magnet is bigger than a thin compass needle.