Q:

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

A:

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.

Know More

## Keep Learning

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.

Sources:

## Try a quiz

Q:
Who was the real Mother Goose?

## Related Questions

• A:

Dr. Inge Lehmann discovered the makeup of the Earth's inner core by studying how an earthquake's waves bounced off the core. It was previously thought that the core was made of liquid, surrounded by solid mantle and a crust. Lehmann found that the Earth's center is made of a solid inner core surrounded by a liquid outer core.

Filed Under:
• A:

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.

Filed Under:
• A:

Seismological studies have measured the Earth's inner core at approximately 760 miles in diameter. The presence of the solid nickel-iron alloy inner core was extrapolated in 1936 by Inge Lehmann from reflections of seismic waves off the boundary area between the outer and inner cores, known as the Lehmann discontinuity.