Question

the Earth's magnetic field varies from point to point in space does it also change with time it so on what time scale does it change appreciably?​

Answer 1

Answer:

yes, Earth's field undergoes a change with time . let see an example , daily changes , annual changes , secular changes with period of the order of 960 years and irregular chagnes like magnetic storms. time scale for appreciable change is roughly a few hundred years.

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