The inner core is the fourth layer inside the Earth. It is a solid metallic ball made mainly of iron . Here, temperatures reach extraordinary levels, estimated to be between 7,200–8,500ºF (4,000–4,700ºC).

25/08/2015 · The inner core is the dense center of Earth. Theories on the formation of Earth suggest that the inner core is composed of iron and nickel heated up to a temperature of around 9,800 degrees F.

The Inner Core is the final layer of the Earth. It is a solid ball made of metal. To learn about what metal the Inner Core is made of, read this section about the Inner Core. You can also learn how hot the Inner Core is, how thick it is and some interesting facts about the Inner Core.

Earth's innermost section is called its inner core, and is believed to be just as hot as the sun's surface. It was once believed that the earth's inner core was liquid, but Inge Lehmann - a seismologist - proved in theory in 1936 that the inner core was solid, and …

01/12/2021 · Earth’s inner core is the innermost geologic layer of the planet Earth. It is primarily a solid ball with a radius of about 1,220 km (760 mi), which is about 20% of Earth’s radius or 70% of the Moon’s radius. There are no samples of Earth’s core accessible for direct measurement, as there are for Earth’s mantle.

What does inner-core mean? (planetology) The solid material found in the centre of some planets at extremely high temperature and pressure, distinc... Dictionary