The mantle!
I remember learning this in geography :)
it remains solid because of all the pressure. Also, it is solid because it is the inner core
The immense pressure from the layers outside of the inner core.
The outer portion of the core is mostly molten iron. The inner core is solid metal.
An alloy of solid nickel and iron, mostly.
So far as science can deduce, it must be a solid.
it remains solid because of all the pressure. Also, it is solid because it is the inner core
The inner core Is solid and the outer core in liquid
Yes earths inner core is a dense ball of metal earths outer core is a layer of molten (melted) metal
The solid inner and liquid outer core.
The immense pressure from the layers outside of the inner core.
a solid ball of iron
Yes the refraction path of the p-wave tells us that the earths inner core is solid.
the inner core
iron and nickel is the answer and so is the inner core. the inner and the outer and together but the outer core is liquid and the inner core is solid
Both! The outer core is in a liquid state and the inner core is a solid. Both the inner and outer core are formed mainly of iron and nickel.
the outer core is liquid; the inner core is solid
it is a solid of iron surrounded by liquid