Download The Layers of Earth

The Layers of
Earth
MAP TAP 2002-2003
The Layers of the Earth
1
Inner Core
Outer Core
Mantle
Crust
MAP TAP 2002-2003
The Layers of the Earth
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Crust
Is made up of
the Crust and
the Moho.
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MAP TAP 2002-2003
The Earth's outermost
surface is called the crust.
The crust is typically about
25 miles thick beneath
continents, and about 6.5
miles thick beneath
oceans.
The crust is relatively light
and brittle. Most
earthquakes occur within
the crust
is the dividing line between the
Crust and the Mantle.
The Layers of the Earth
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Lithosphere
Is made up of the Crust and the Moho.
 Brittle uppermost shell of the earth, broken
into a number of tectonic plates
 The thickness of the lithosphere varies
from to around 1 mi at the mid-ocean
ridges to approximately 80 mi beneath
older oceanic crust.
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MAP TAP 2002-2003
The Layers of the Earth
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Mantle
is the outer layer of
the mantle.
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MAP TAP 2002-2003
The region just below the
crust.
The mantle is the largest
layer of the Earth.
Extends all the way down
to the Earth's core.
The mantle is relatively
flexible so it flows instead
of fracturing.
The mantle is divided into
two regions: the upper and
lower sections
The Layers of the Earth
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Asthenosphere
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Is the outer layer of the mantle.
Characterized by low-density, partially molten
rock material The upper part of the
asthenosphere is believed to be the zone upon
which the great rigid and brittle lithospheric
plates of the earth's crust move about.
Located between 45—155 miles beneath the
earth's surface.
MAP TAP 2002-2003
The Layers of the Earth
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Core
Beneath the
mantle is the
Earth's core.
 The Earth's core
consists of a fluid
outer core and a
solid inner core.
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MAP TAP 2002-2003
The Layers of the Earth
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Outer Core
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The core of the Earth is like a
ball of very hot metals.
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The outer core is liquid.
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The outer core is made up of
iron and is very dense.
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Because the outer core
contains iron, when it flows it
generates a magnetic field.
This is the source of the
Earth's magnetic field.
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1,800 - 3,200 miles below
surface
MAP TAP 2002-2003
The Layers of the Earth
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Inner Core
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The inner core of the Earth
has temperatures and
pressures so great that the
metals are squeezed
together and are not able to
move.
The inner core is a solid.
3,200 - 3,960 miles
MAP TAP 2002-2003
The Layers of the Earth
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Label the layers of the Earth.
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Crust
Outer Core
Mantle
Inner Core
Lithosphere
Athenoshpere
MAP TAP 2002-2003
The Layers of the Earth
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Answers
MAP TAP 2002-2003
The Layers of the Earth
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Extra
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Because the core is so hot, it radiates a natural heat to the upper
layers. Because of this a current of heat comes into being. Those
are also known as the convection currents. The convection currents
cause the movement of the tectonic plates. This movement is called
plate tectonics. The outer core and the inner core together cause the
earth's magnetism. Because the earth rotates, the outer core spins,
the inner core doesn't spin because it's solid. This gives a kind of
dynamo effect and causes the earth's magnetism. Magnetism has
been used by sailors to find their way on earth for thousands and
thousands of years. Magnetism also influences electro-particles
outside the atmosphere of the earth, up to more than 37,000 miles
(60,000 km) into space
MAP TAP 2002-2003
The Layers of the Earth
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Make the
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Inner Core – Malted Milk Ball
Outer Core – Cool Whip
Mantle – Double Stuffed
Oreo
Athenoshpere – Vanilla Ice
Cream
Moho – Magic Shell
Lithoshpere – Cool Whip
Crust – Crushed Oreos
MAP TAP 2002-2003
The Layers of the Earth
Have the students
use 9 oz. clear
cups to create the
Earth.
Put the students in
groups.
Have the students
do a write about
their activity.
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