The Earth's Layers
Crust
●
Mantle
●
Outer Core
●
Inner Core
●

Crust Outside
layer
Compared
to the
thickness
of the skin
of an apple
Made of
solid rock
Several
kilometres
thick

Mantle
Thickest layer
Under the crust
Melted rock and
metal
Consistency of
toothpaste

Outer Core
Melted Liquid
Metal
Gravity moves
heavy metals,
such as iron and
mercury, into
the core
Heat and pressure
melt the metal
into a liquid

Inner core
Solid Metal core
Mostly iron and
other heavy
metals
Super hot
Gravity and
pressure keep
the inner core
solid