Transcript Earth`s Interior Flip Book

The
Earth’s
Layers
Crust
(10-25 miles thick)
(cool)
1,800 miles
Mantle
(870 degrees C)
1,430 miles
Outer Core
(2,200 degrees C)
750 mile
radius
Inside Our Earth
Inner Core
(5,000 degrees C)
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The crust is hard and brittle
It is made of rock: mostly
basalt (oceanic) and
Granite (continental)
The mantle is hot part
melted and part solid
Iron, silicon and
magnesium. Also a
rock called periodite
The outer core is
made of hot liquid
nickel and iron.
The inner core
is made of solid nickel
and iron and is magnetic
Composition of the Earth’s Layers
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The mantle is divided into three parts:
the lithosphere includes the
crust
crust and the uppermost mantle,
which constitute the hard and
rigid outer layer of the Earth.
The Lower mantle
mantle
makes up half of the
volume of the Earth’s
interior. Althought the
lower mantle is MUCH
hotter than the upper
mantle, it does not flow
as easily because of the
increased pressure.
Variances of temperature
in the mantle cause
convection currents
which move the
lithospheric plates.
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The asthenosphere
asthesnosphere
lower
mantle
(or upper mantle) is solid even
though it is at very hot
temperatures of about 1600 C
due to the high pressures from
above. However, at this
temperature, minerals are
almost ready to melt and they
become ductile and can be
pushed and deformed like silly
putty (plastic) in response to
the warmth of the Earth. The
flowing asthenosphere carries
the lithosphere of the Earth,
including the continents, on its
back.
The core has two parts
Outer core
(liquid Iron)
Inner core
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Slide
• The core of the Earth is VERY HOT
• The inner core is solid because the
extreme pressure does not allow the
particles enough space to liquefy
• The Earth’s core is magnetic
(solid Iron)
• Earth's inner core is rotating faster
than the planet itself.
• The Earth's solid iron inner core,
which, is estimated to be roughly the
size of the moon. It rotates because it
is surrounded by a much larger liquid
outer core, and together the two form
a giant electrical motor.