Download The Chemical Layers of the Earth

The Chemical Layers of the
Earth
What does this graph show us?
Density of Earth as Distance from Core Increases
Remember
when the
Earth was
molten? …
More dense elements “sank” to center of
Earth!
3 Chemical
Layers of
Earth
• Based on what chemicals
make up the layer, called
“chemical composition”
• Crust, Mantle, and Core
What is the
Crust?
• The layer that
forms the
EARTH’S SURFACE
• Two types:
oceanic and
continental
• Mostly Oxygen,
Silicon, and
Aluminum
How thick is the
crust?
• Continental
Crust: 5-25
miles thick
• Oceanic
Crust: 3-5
miles thick
What is the Mantle?
•Inside Earth,
under crust.
•Rich in
Magnesium,
Oxygen, and
Silicon
•1800 miles
thick
What is the core?
•The CENTER
of the Earth
•Mostly Iron
and Nickel
•2,200 miles
thick
A cross section of the layers of
the earth