The crust of the Earth is thin
compared to the other layers, only 8
kilometres thick under the ocean
and 40 kilometres thick under the
continents. The Earth’s crust is broken
into many different sections called
plates. These plates float on the
mantle allowing them to move. The
crust is made of rock, mainly granite
and basalt. The oceanic rock is
much heavier than the continental
rock. The crust and the top layer of
the mantle form the lithosphere.
The Crust
The Mantle
Lynn Eremondi, 2015
The mantle is the thickest layer of the
Earth, 2896 kilometres thick. The
mantle is made of very hot rock that
is in a viscous state. The top of the
mantle is around 871 degrees, while
the temperature rises to around 2204
degrees deeper into the mantle. The
crustal plates drift on the top of the
mantle. The mantle is able to flow.
This motion may be caused by
convection currents, which are
caused by hot material from the
deep mantle rising up, cooling, and
sinking to the bottom again.
The Outer Core
The outer core is so hot that the
entire layer is liquid. It is comprised of
melted nickel and iron. The deeper
you go into the core, the hotter it
becomes. At the hottest point the
temperature may reach 4982
degrees Celsius. The outer core is
about 2896 kilometres below the top
of the crust.
The inner core is found 6437
kilometres under the crust and is
about 1287 kilometres thick. The
inner core is the heaviest part of the
Earth and is in a solid state. It is
composed of iron. It is thought that
the temperature deep within the
core may reach 4982 C.
The Inner Core
Lynn Eremondi, 2015
The Crust
The Mantle
Lynn Eremondi, 2015
The _____of the Earth is thin
compared to the other layers, only 8
kilometres thick under the ocean
and 40 kilometres thick under the
continents. The Earth’s _____ is
broken into many different sections
called plates. These plates float on
the mantle allowing them to move.
The _____ is made of rock, mainly
granite and basalt. The oceanic
rock is much heavier than the
continental rock. The _____ and the
top layer of the mantle form the
lithosphere.
The ______ is the thickest layer of the
Earth, 2896 kilometres thick. The
______ is made of very hot rock that
is in a viscous state. The top of the
______ is around 871 degrees, while
the temperature rises to around 2204
degrees deeper into the ______. The
crustal plates drift on the top of the
______. The ______ is able to flow. This
motion may be caused by
convection currents, which are
caused by hot material from the
deep ______ rising up, cooling, and
sinking to the bottom again.
The Outer Core
The _____ ____ is so hot that the entire
layer is liquid. It is comprised of
melted nickel and iron. The deeper
you go into the ____, the hotter it
becomes. At the hottest point the
temperature may reach 4982
degrees Celsius. The _____ ____ is
about 2896 kilometres below the top
of the crust.
The _____ ____ is found 6437
kilometres under the crust and is
about 1287 kilometres thick. The
_____ ____ is the heaviest part of the
Earth and is in a solid state. It is
composed of iron. It is thought that
the temperature deep within the
____ may reach 4982 C.
The Inner Core
Lynn Eremondi, 2015