What is the temperature of the Earth's inner core?


Quick Answer

There is no way for the inner core of the Earth's temperature to be physically measured; however, according to mathematical equations based on what is known about the core, it is estimated that the core is approximately 9,000 degrees Fahrenheit. Approximations of the Earth's internal temperature have changed through the decades as technology has improved and the current estimation is nearly 1,000 F higher than before.

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Full Answer

The inner core was discovered to be solid as recently as 1906. This was determined using seismic activity and information gathered from seismic records. The information gathered from these records and the actions of shear and compressional waves lead scientists to the idea of the core being solid. It is believed that the core of the Earth is made of iron, or an alloy of iron, oxygen and nickel. This information is based on the theory of plant formation along with the observance of the presence of various elements found on Earth and in the solar system. The density of the core, which is higher than pure iron or nickel, leads scientist to believe that there are other metals in the core as well, such as gold and platinum. There is much more to learn about the core as technology advances and scientists are able to gather more information about the core.

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