The Earth's core consists primarily of hot and solid iron and nickel. It is the innermost layer of the Earth and has a temperature of up to 13,000 degrees Fahrenheit. More »

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According to National Geographic, the inner core of the Earth ranges between 9,000 and 13,000 degrees Fahrenheit. This is approximately as high as the temperature of the sun's surface. More »

The Earth's inner core is roughly 750 miles thick and it is primarily composed of iron. The iron in the Earth's core reaches temperatures as high as 13,000 degrees Fahrenheit, but remains a solid because of the intense s... More »

The outer core, one of the three layers of the Earth, is approximately 1,430 miles (2,300 kilometers) thick and between 7,200 and 9,000 F. According to National Geographic, the outer core is mostly composed of iron and n... More »

The Earth's core is made up primarily of the metals nickel and iron. The inner core is mostly iron, while the outer core is composed of both nickel and iron. More »

While iron and nickel form the liquid outer layer of Earth's core, the solid inner core is made mostly of iron. The iron in Earth's core is what gives the planet its magnetic field. More »

The Earth's outer core is almost completely made of nickel and iron. These two metals form a metallic element mixture, or alloy, in the core. More »

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