How hot is it at the Earth's centre?

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Offline chris

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How hot is it at the Earth's centre?
« on: 20/01/2011 03:32:31 »
What temperature is it at the Earth's core? And how do we know?

Chris
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Offline Atomic-S

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How hot is it at the Earth's centre?
« Reply #1 on: 21/01/2011 05:40:10 »
If memory serves me correctly, I read somewhere an estimate of 13,000 degrees (F? C?). Could not give you the reference, however.
 

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Offline Don_1

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How hot is it at the Earth's centre?
« Reply #2 on: 21/01/2011 11:30:07 »
Did someone poke an oversized one of these in the ground?


OK, I'll shut up now.
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Offline chris

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How hot is it at the Earth's centre?
« Reply #3 on: 21/01/2011 12:03:29 »
Indeed; how do they know?

I found a reference the other day suggesting the Earth's core is at about 5700K.
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Offline Evie

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How hot is it at the Earth's centre?
« Reply #4 on: 04/02/2011 22:17:59 »
It is estimated at 5,700 K (5,430 C; 9,800 F).

This is found by calculating the melting temperature of impure iron at the pressure of the inner core boundary.
====================================================
"There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy."
Hamlet
Act I, scene 5