<p>Actually, the core has two parts. The <a href="http://en.wikipedia.org/wiki/Outer_core">outer core</a> is liquid, while the <a href="http://en.wikipedia.org/wiki/Inner_core">inner core</a> is solid.</p>

<p>As explained in the <a href="http://en.wikipedia.org/wiki/Earth%27s_magnetic_field">Wikipedia article about Earth's magnetic field</a>:</p>

<blockquote>
  <p>The Earth's magnetic field is mostly caused by electric currents in the liquid outer core, which is composed of highly conductive molten iron.</p>
</blockquote>

CC BY-SA 3.0
2013-10-07T19:53:29.573Z
2013-10-07T19:53:29.573Z
Donald.McLean
<p>Earth's core is a giant liquid iron ball actually. If I know well, the magnetic field of our planet (that protects the surface from some particles comes from the Sun) can exist because as Earth rotates, the liquid iron core also rotates, and it generates a magnetic field.</p>

<p>However, ferromagnetism has strict conditions. How can the liquid and hot core still be ferromagnetic? How is it possible for Earth to have a magnetic field generated by a body that is not even solid?</p>

<earth><rotation><core><magnetic-field>
Earth and ferromagnetism
Zoltán Schmidt
# Earth and ferromagnetism

(Asked by: username_0 on 2013-10-07)

Earth's core is a giant liquid iron ball actually. If I know well, the magnetic field of our planet (that protects the surface from some particles comes from the Sun) can exist because as Earth rotates, the liquid iron core also rotates, and it generates a magnetic field.

However, ferromagnetism has strict conditions. How can the liquid and hot core still be ferromagnetic? How is it possible for Earth to have a magnetic field generated by a body that is not even solid?

**Tags:** earth, rotation, core, magnetic-field

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## 1 answers

### Answer by username_1 on 2013-10-07. Score: 7 | Accepted answer

Actually, the core has two parts. The [outer core](http://en.wikipedia.org/wiki/Outer_core) is liquid, while the [inner core](http://en.wikipedia.org/wiki/Inner_core) is solid.

As explained in the [Wikipedia article about Earth's magnetic field](http://en.wikipedia.org/wiki/Earth%27s_magnetic_field):

> The Earth's magnetic field is mostly caused by electric currents in the liquid outer core, which is composed of highly conductive molten iron.


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