Question

Why the inner core remain soild form where as the upper core remain in liquid form​

Answer 1

Answer:

The inner core is solid because it is made of very dense, or heavy, materials - like iron and nickel. Even though it is very hot, these materials don't "melt" very easily, so they stay solid. Answer 3: It turns out that many materials can be a solid at a higher temperature if the pressure is also higher

Explanation:

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Answer 2

Answer:

The inner core is solid because it is made of very dense, or heavy, materials - like iron and nickel. Even though it is very hot, these materials don't "melt" very easily, so they stay solid. It turns out that many materials can be a solid at a higher temperature if the pressure is also higher.

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