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*[[Outer Core]]: The [[Outer Core]] is a [[liquid]] layer below the [[Mantle]].
*[[Inner Core]]: Underneath the [[Outer Core]] is the [[Inner Core]] at the very centre of [[Earth]]. It is a [[solid]] [[sphere]].
===References===
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''Structure of the Earth, page 37, GCSE Physics; The Revision Guide, CGP, Edexcel '']