You can learn about the interior of the Earth

1. Inside the Earth
Victoria Saura Montesinos
The interior structure
of the Earth is
layered in spherical
shells, like an onion.

2. Its structure is divided in:
Mohorovičić
discontinuity
Gutenberg
discontinuity)
Lehmann
discontinuity

3. (Rigid)
(Rigid)
These layers can be
defined by either their
chemical or their
rheological properties.
Earth has a solid crust, a
highly viscous mantle, a
liquid outer core and a
solid inner core.
(Plastic)
(Rigid)
Lithosphere
astenosphere

4. •The crust it’s the outermost layer.
•The thin parts are the oceanic crust, which
underlie the ocean basins (5–10 km).
•The thicker crust is continental crust, which
is less dense.
•The uppermost mantle together with the
crust constitutes the lithosphere.

5. Convection
currents are
produced by
differences in
temperature and
density, so that
the hotter
material weigh
less and rise and
cooler
material, are
thicker and
heavier and
descends.
The mantle is the thickest layer of Earth.
It’s composed of silicate rocks that are rich
in iron and magnesium.
·The origin of plate movement occurs by
some material currents in the mantle, the socalled convection currents, and especially, in
the force of gravity.

6. •There aren’t denser materials than the
Earth's core.
•Seismic measurements show that the
core is divided into two parts, a “solid”
inner core and a “liquid” outer core.

7. Plates
The asthenosphere is the part of the
mantle that flows and moves the
plates of the Earth.
•The lithosphere is
broken into many
pieces called plates.
•The plates "float" on
the soft, plastic
mantle which is
located below the
crust.
•These plates usually
move along smoothly
but sometimes they
stick and build up
pressure.
•The pressure builds
and the rock bends
until it snaps.
•When this occurs an
earthquake is the
result.