C. S waves travel through solids or very dense, glassy liquids. P waves travel through solids, liquids, and gasses.
It turns out that many materials can be solid at a higher temperature if the pressure is also higher. so even though it is hotter in the inner core the pressure in the core is also higher and you can have a solid iron nickel instead of liquid
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The subatomic particles located inside of the nucleus of an atom consist of protons and neutrons.
