<p>The <a href="https://en.wikipedia.org/wiki/Inner_core">inner core</a> of the Earth is a large sphere of nickel-iron alloy. Surrounding this is the molten inner core which has a temperature of approximately 5400 ℃.</p>

<p>The <a href="https://en.wikipedia.org/wiki/Geothermal_gradient">source of heat</a> that keeps the Earth's core hot and molten is the decay of radioactive elements, predominantly uranium, thorium and potassium.</p>

<p>The Mantle and Crust act as insulators for the Earth's Core.</p>

CC BY-SA 3.0
2017-01-28T01:05:19.507Z
U, K and Th in the core? Those are in the mantle and the crust, not core.
Gimelist
CC BY-SA 3.0
2016-03-16T00:26:45.997Z
2016-03-16T00:26:45.997Z
Fred
<p>What is the earth's core temperature and is it really directly related to the earth's mantle?  </p>

CC BY-SA 3.0
2016-03-16T08:33:26.480Z
Sorry, you need to write better questions. So now *we* have to go and look up what temperatures are mentioned in that movie??? And why are you asking; because Googling this question would have given you the answer in *less* time than it took you to write this question? The answer can also be [searched on this site](http://earthscience.stackexchange.com/search?q=is%3Aq+core+temperature) and then you find this: http://earthscience.stackexchange.com/questions/240/is-the-earths-hot-inner-core-necessary-for-life
Jan Doggen
<temperature><mantle>
What is the earth's core temperature?
MissLucy0909
# What is the earth's core temperature?

(Asked by: username_0 on 2016-03-16)

What is the earth's core temperature and is it really directly related to the earth's mantle?

**Tags:** temperature, mantle

> **Comments:**
> **username_1**: Sorry, you need to write better questions. So now *we* have to go and look up what temperatures are mentioned in that movie??? And why are you asking; because Googling this question would have given you the answer in *less* time than it took you to write this question? The answer can also be [searched on this site](http://earthscience.stackexchange.com/search?q=is%3Aq+core+temperature) and then you find this: http://earthscience.stackexchange.com/questions/240/is-the-earths-hot-inner-core-necessary-for-life  

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## 1 answers

### Answer by username_2 on 2016-03-16. Score: 6

The [inner core](https://en.wikipedia.org/wiki/Inner_core) of the Earth is a large sphere of nickel-iron alloy. Surrounding this is the molten inner core which has a temperature of approximately 5400 ℃.

The [source of heat](https://en.wikipedia.org/wiki/Geothermal_gradient) that keeps the Earth's core hot and molten is the decay of radioactive elements, predominantly uranium, thorium and potassium.

The Mantle and Crust act as insulators for the Earth's Core.

> **Comments:**
> **username_3**: U, K and Th in the core? Those are in the mantle and the crust, not core.  

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