The centre of the Earth's core - is a solid iron sphere.
The Wikipedia article on "Earth" mentions that at the center, the temperature "may" be up to 6000 degrees Celsius.
rock
Because the outercore applies pressure to the innercore. Its like the book stack effect, pile up 5 books. Which book has the most pressure on it? The bottom. Now imagine that being a CIRCLE of books, the INNERbook or the innercore would have the most pressure.
Heavy (or dense) ones ...mostly iron.
The lithosphere.
hemisphere.
iron
argon
it is the lithosphere
The element that makes up most of the earths CORE is iron.
Nitrogen makes up 78% of the Earth's atmosphere.
Nitrogen makes up 78% of Earth's atmosphere.