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On a day to day basis, there is no change in the Earth's magnetic field to any significant degree that you might be able to notice with a compass. However, with sensitive instruments one can detect that the Earth's magnetic field changes continually in both magnitude and direction.
It might be particular interest to know that the location of the poles are changing and the North magnetic pole is moving about 30 miles or 50 kilometers per year.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoNobody knows for sure ...
but the best (current) theory is the spinning of the molten core produces an electrical field, which in turn generates a magnetic field.
As for changes, it constantly changes :
in strength, in position relative to the Earth, and in polarity (i.e. - it switches poles every so often).
Wiki User
∙ 12y agoYes it can. In both direction and strength.
Wiki User
∙ 12y agoyep you can tell because as the sea floor spreads the lines of the rocks are symmetrical.
Wiki User
∙ 12y agoNo. But ways of making and using it changed by time.
Wiki User
∙ 11y agoNo
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What has the author Folke Eleman written?
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extraversion, neuroticism and psychoticism
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Scientists used the pattern of alternating normal and reversed polarity in rocks to create the geomagnetic?
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