Would the Earth speed up rotating if the molten core solidified?

In summary, the question is whether the Earth's rotation speed will increase in response to the shrinking of its molten core when it solidifies. This is due to the cooling and shrinking of the Earth, which would cause it to rotate faster. However, the current slower rotation is influenced by tidal interactions with the Moon. It is likely that the latter effect will dominate.
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The question is simple. The molten stuff inside the Earth will get a smaller volume when it solidifies. Will the Earth increase its rotation speed in reaction to this? What about the magnetic field?
 
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  • #2
Prishon said:
The question is simple. The molten stuff inside the Earth will get a smaller volume when it solidifies. Will the Earth increase its rotation speed in reaction to this? What about the magnetic field?
Can you please post some links with references about your question? How much of Earth's core is molten? What is it made up of? Why would it shrink when solidifying? And so on. Thanks for filling our your question further.

https://en.wikipedia.org/wiki/Earth's_inner_core
 
  • #3
If Earth cools and shrinks it will tend to rotate faster. It is currently rotating slower due to tidal interactions with the Moon. I think the latter effect will predominate.
 
  • #4
Looks like OP is on vacation for 10 days, so I'll go ahead and close this thread.
 

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