1. The structure of
the Earth
Crust
Mantle
It is the rocky outer surface of the
Earth. It is mostly composed of
basalt and granite. The crust is
thinner under the oceans.
It is a rocky layer located under the
crust. It is composed mostly of silicates.
Convection currents carry heat from the
hot inner mantle to the cooler outer
mantle.
InnerCore
The solid iron - nickel center of the
Earth that is very hot and under
great pressure that prevents the
iron from melting.
OuterCore
It is the molten iron - nickel layer
hat surrounds the inner core. The
liquid metal of the outer core can
be easily deformed and malleable.
