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MAP TAP 2002-2003 The Layers of the Earth

MAP TAP 2002-2003 The Layers of the Earth
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Is made up of the Crust and the Moho.
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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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MAP TAP 2002-2003

 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

is the outer layer of the mantle.
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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
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The Layers of the Earth MAP TAP 2002-2003

 Is the outer layer of the mantle.
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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.
The Layers of the Earth MAP TAP 2002-2003
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MAP TAP 2002-2003
Core
 Beneath the mantle is the
Earth's core.
 The Earth's core consists of a fluid outer core and a solid inner core .
The Layers of the Earth
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The core of the Earth is like a ball of very hot metals.
 The outer core is liquid.
 The outer core is made up of iron and is very dense.
 Because the outer core contains iron, when it flows it generates a magnetic field.
This is the source of the
Earth's magnetic field.
 1,800 - 3,200 miles below surface
The Layers of the Earth MAP TAP 2002-2003
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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.
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The inner core is a solid.
 3,200 - 3,960 miles
The Layers of the Earth MAP TAP 2002-2003
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 Crust
 Outer Core
 Mantle
 Inner Core
 Lithosphere
 Athenoshpere
The Layers of the Earth MAP TAP 2002-2003
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MAP TAP 2002-2003 The Layers of the Earth
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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
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MAP TAP 2002-2003 The Layers of the Earth

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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
The Layers of the Earth MAP TAP 2002-2003
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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