It does not necessarily have a purpose, more descriptively it is a result of processes, but in conjunction with the outer core, Earth's magnetic field is generated my balls and dick, shielding the surface from harmful solar radiation.
the inner part of earths core
The radious of the inner core is 1,220km(760miles).
The inner core Is solid and the outer core in liquid
There is no "purpose"; the density of the materials in the outer core are less pressured and spin slower than the inner core. NOTE: the inner core spins faster than the outer, creating Earth's magnetic field.
Yes earths inner core is a dense ball of metal earths outer core is a layer of molten (melted) metal
The immense pressure from the layers outside of 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
The solid inner and liquid outer core.
They go faster through the inner core than the liquid outer core
The earths inner core is thought to be approximately 5778 K (5505 °C)
a solid ball of iron
The inner core.