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The inner core is solid and composed mostly of iron.
The inner core.
Core.
The inner core.
The core
The inner core is solid and composed mostly of iron.
The inner core.
The spherical solid core of the earth. It is an alloy composed mostly of nickel and iron.
Umm iron?
(Relatively) Thin outer layer, the Crust. Very thick inner layer, the Mantle. Mostly solid silicate rocks. Liquid inner layer, the Outer Core. Mostly liquid iron and nickel blend. Solid core, the Inner Core. Mostly solid iron-nickel alloy, and estimated to have a temperature of about 5700 Kelvins, or 5430 Celsius.
mantle
mantle
The inner solid iron core.
Core.
The inner core.
The core
The Inner Core