[jwalsh07]

No it doesn't. You're right abouth the Earths temperature. The avg surface temp of Earth is about 14C or 287 Kelvins or an energy output of about 385 watts per square meter. The input energy from the Sun is about 350 watts per square meter. Doesn't leave much for the Earths core to do, some might say just enough though.

[Steve Van Doorn]

Your figures are about right but where is the rest of the heat come from? Remember space is cold.

Every time that you go down a 1.6 km in to the earth, the temperature increases by 22 deg C.

Earths crust is only 30 to 110 Km to the top of the Earth's mantel which is over 1000 deg C.

[Steve Van Doorn]

I just calculated how many watts it would take to warm the earth to 15 deg C.
Over 1550 watts per square meter.
I still can not find a link ha.