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Published on Feb 09, 2016
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PRESENTATION OUTLINE
1.
The earths crust is very thin.
Photo by
desertdutchman
2.
HOW THICK IS IT?
It is 5-7 km thick
It is often compared to the paper thin skin of an onion
Photo by
NASA's Marshall Space Flight Center
3.
OCEANIC CRUST IS THE CRUST BENEATH THE OCEAN
WHAT IS OCEANIC CRUST?
4.
BASALT
Dark
Fine texture
5.
What is the continental crust?
It is the crust that forms beneath the continents.
6.
GRANITE
Usally light colored
Coarse texture
7.
THE MANTLE
Solid
Thick
8.
HOW THICK IS IT....EVEN THICKER
2,867 KM THICK.
9.
LITHOSPHERE
The uppermost layer
In greek lithos means stone
100 km thick
10.
ASTHENOSPHERE
In greek means weak
This layer is somewhat soft
11.
LOWER MANTLE
Solid
Extends all the way to the core
Bobby Owen
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