Download Layers of the Earth

The Earth’s Layers
Crust
• The crust is the outermost
layer. It ranges from 5- 60 km
in depth. It is divided up into
the oceanic crust (which is the
thinnest crust) and the
continental crust (which is the
thickest).
Crust
• The crust is less dense
than the other layers. It
is less than one percent
of Earth’s mass.
Crust
• The crust is broken
into many pieces called
plates – which move
along the soft mantle
underneath crust.
Mantle
• The mantle is the thickest layer. It
is 2900 km in depth. Sixty-seven
percent of the Earth’s mass is
located in the mantle.
• Temperatures can reach up to 2800
degree Celsius.
• The Lithosphere is located in the
upper mantle.
Mantle
• The convection
currents
located in the
mantle creates
the movement
of the Earth’s
plates.
Outer Core
• The outer core consists of
liquid nickel and iron.
• The temperature of the
outer core ranges from
4000 – 5000 degrees
Celsius.
Inner Core
• The inner core is a dense, solid
consisting of iron and nickel. It is
the most dense layer.
• It is around 1250 km thick.
• Temperatures are between 5000
and 6000 degrees Celsius.
Asthenosphere
• It lies below the lithosphere
• Upper part of the mantle
• Hotter, softer Rock that will flow slowly
Asthenosphere
• Motion of the asthenosphere causes the
continents to drift, along with Convection
Currents
• What are Convection Currents?
Lithosphere
• Bottom part of Earth’s crust and the very
top of the mantle
• Most rigid of all layers
• Approximately 100km thick
• Sits on top of the Asthenosphere