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For questions about the Earth's core. The center of the Earth is primarily iron-nickel.

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How fast does the Earth's inner-core rotate compared to the Earth's daily rotation? The inner core is always described as a spinning/rotating solid core while the Earth has a single revolution per … (which I don't), a number doesn't mean anything unless compared to something relatable. So how much faster/slower is the core rotation compared to the 24 hour day rotation? Eg the inner core rototes 25 or 2.5times per 1 day. Or the inner core rotates 0.5 times per 1 day. …
asked Sep 28 '16 by EveryBitHelps