Transcript Structure of the Earth

Structure of the Earth
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The interior of the Earth is divided into several
layers
In the center of the Earth is the Inner Core.
 The Inner Core is made of solid iron and nickel.
 The Inner Core goes from 5150 – 6371 km
below ground
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The Inner Core is surrounded by the Outer Core.
 The Outer Core is made of liquid iron and nickel
 The Outer Core goes from 2890-5150 km below
ground
 The Outer Core’s material spins around the solid
inner core, this creates the Earth’s magnetic field
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Around the Outer Core is the Mantle
The Mantle is divided into two major layers, the Lower
and Upper Mantle
The Lower Mantle is made of solid rock, but very high
pressure inside the Earth makes it act like a liquid.
The Mantle goes from 65- 2890 km below ground
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Above the Mantle is the Crust
The Crust is made of light, solid rocks.
The Crust goes from the surface of the Earth to 65 km
below ground.
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The Upper Mantle is divided into two layers, the
Asthenosphere and the Lithosphere.
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The Asthenosphere is closer to the Earth’s Core.
It is made of “slush-like” rock- it can act like a solid or a
liquid
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The Lithosphere is closer to the Earth’s Surface.
It contains both the uppermost part of the Mantle and
Earth’s Crust
It is made of rigid (solid) rock
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Pressure increases as you get farther inside the Earth.
The Crust has very low pressure.
The Inner Core has very high pressure.
Pressure Increases