Shake, Rattle and Slide - The Work of Earthquakes, Volcanoes and Glaciers
IntroductioSADCn
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).