Internal
Structure of the Earth
qThe Crust
q
It is inhomogeneous in both thickness and
compositions.
qThe Mantle
q
It is uniform in composition and formed of silicate materials
q The Core
q * It is dominated by iron, along with small amounts of nickel.
q * It is the source of Earth’s magnetic field.
q * The outer core is in fluid form and the inner core is in solid form.
From The Blue Planet