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The earth's core isn't entirely solid. In fact the earth's core is slit into two main sections. The inner core (which is solid) and the outer core which is liquid.

This is because the melting point of materials varies depending on the applied pressure. As pressure increases so to does the melting temperature. This relationship is normally shown in a phase diagram.

The main constituent of the inner core is iron and the inner core pressure is approximately 330-360 GPa while the temperature varies from approximately 5000 to 7000 K.

The extremely high pressures in the Earth's inner core therefore drive the melting point of the iron up beyond the temperature that occurs and the metals of the inner core cannot melt.

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Q: Why is the Earth's core solid if it's so hot?
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Related questions

Is earths core a solid?

no the core of the earth is not solid its pretty much a liquid, since the middle of the earth is so hot, the core is like a lava substance.


Is earths outer core liquid or solid?

So far as science can deduce, it must be a solid.


What is the earths outter core composed of?

iron and nickel is the answer and so is the inner core. the inner and the outer and together but the outer core is liquid and the inner core is solid


Does earth's molten core affect gravity?

First: The earths core is not molten, it is a very dense solid mass, kept solid by the intense pressure on it. Second: It is the layer around this core that is molten, and yes it does influence gravity, but more so earths magnetism.


The inner core of the earth is extremely hot and is probably solid?

yes its extremely hot and so high pressured that it is a solid.


Is the inner core of the earth extremely hot and is probably solid?

yes its extremely hot and so high pressured that it is a solid.


How can a solid core exist within a hot liquid layer?

The higher the pressure, the more likely a liquid will turn into a solid. So, high pressure (like the Earth's core) can turn a core solid.


What state of matter within the outer core?

cool stuff


Why is the inner core of the earth solid?

It is solid because there is so much pressure that it makes it really dense.


If iron melts at 1538 degrees and the earths core is at 5500 degrees why is it still a solid?

the 2 main variables which decide whether an element or compound is a solid, liquid, or gas, are temperature and pressure.Iron melts at 1538 degrees only when it is pure (which the core is not) and under atmospheric pressure. The iron in the earths inner core is under pressure equivalent to many thousands (if not millions) times that of atmospheric pressure, so it exists as a solid.


What if us as people from earth decided to mine iron and nickel from the earths core?

1. we would never be able to get down to the bottom to the core because we dont have the machineary and if we got past the earths crust hot molten lava would pour out and destroy the country. 2. if we mined the earths core it would be so hot no thing could survive it and we couldn't mine it because it is extremely hard


What is the outer core made of liquid or solid?

Melted iron and nickel alloy. It is too hot near the centre, so it is liquid. But if you want to know if the inner core is solid or liquid, then it is solid, because there is too much pressure from the rest of the Earth