The
interior of the Earth
is made up of molten metal with a temperature of about 6000 degrees Celsius and
the temperature of the surface of the Sun is about 5500 degrees Celsius. This
means that the interior of the Earth
is hotter than the surface of the Sun in our solar
system.
The
central part of the Earth
(Core) is its central sphere that makes up the structure of the Earth.
It is mainly composed of iron with 5 to 10 percent nickel and very small
amounts of lighter elements such as sulfur and oxygen. Its
diameter is about 3500 km, which is more than the diameter of Mars and it is
32% of the total mass of the Earth.
Its internal pressure
is millions of times higher than the pressure
on the surface and the temperature can be more than 6700 degrees Celsius.
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