At the very center of the earth is the inner core . It is believed to be 700-900 miles in diameter. The pressure is so great in this layer that it is solid. It is made up of iron and other metals that can be up to 13,000°F (7,000°C).
At the very center of the earth is the inner core . It is believed to be 700-900 miles in diameter. The pressure is so great in this layer that it is solid. It is made up of iron and other metals that can be up to 13,000°F (7,000°C).
