# How hot is the Earth?

The hottest place on Earth is in its molten core, where temperatures reach approximately 10,800 degrees Fahrenheit. The surface temperatures on the planet vary widely, but according to NASA, the average surface temperature of the Earth is about 59 degrees Fahrenheit.

The Earth's core is this hot because of three primary factors. The first is the radioactive decay that occurs from some of the elements in the core. The second factor that heats the core is the friction caused by the movement of the core. Finally, some of the heat is actually left over from the initial formation of the planet itself, according to Smithsonian.com.

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Q&A Related to "How hot is the Earth?"
 Very hot! Scientists have estimated that the Earth's inner core is approximately 9,000 degrees Fahrenheit. For comparison, the surface temperature of the Sun is about 10,000 degrees http://www.ask.com/web-answers/Science/Other/how_h...
 As a quick survey of the planets will show, planets closer to the sun tend to have higher mean temperatures than planets farther out in the solar system, due to different levels of http://www.ehow.com/info_8574592_hot-earth-sun-cam...
 Well theres no specific permanent temperature for the earths center, but only averages, ranges and approximates of temperatures. The earths centre which is the core, consists of two http://wiki.answers.com/Q/How_hot_is_it_in_the_cen...
 In a 24 hour period, the Earth revolves 25,000 miles, at a speed of about 1,000 miles per hour. Around the Sun, the Earth revolves at 67,000 miles per hour. http://www.ask.com/web-answers/Science/Astronomy/h...
The mean temperature on Earth is 15°C (59°F).
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