The core is composed mostly of iron with lesser amounts of nickle and other elements
At the extreme pressure found in the core, this iron rich
material has an average density of about 11 gm / cm3 and have 14 times the density of water at Earth’s centre
The inner core and outer core are very similar
Their division is based on differences in mechanical strength
The outer core is a liquid capable of flow
The inner core, despite its high temperature is stronger than the outer core and behaves like a solid.
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