The earth is made
of different ------;
4 layer. many
researcher say
that as the earth was cooling, the heavier
---------
sank to the center and
--------
rose to the top .consequently,the lightest materials are
made-------
(basalt and granite rocks) and heavy
--------
are in the core(iron and nickel).
The layer that
you live on, is the crust and it is
the most
known layer.The mantle has the
ability to-------
and is much hotter. The
-------
and ------
cores are hotter and if you were able
to go to
the center of the earth, because of very
--------,you
could squeezed it into a ball smaller than a marble
smaller
than a marble.
.gif)
