Transcript Earth Layers - Cobb Learning

Earth Layers
Key Term Descriptions
Crust
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Items to help you remember….
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B)
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D)
CRUST
MADE OF 2 PARTS…
• A)CONTINENTAL CRUST-CONTINENTS, ROCKS,
SOIL=GRANITE
• B)OCEANIC CRUST=MORE DENSE, SINKS
UNDER CONTINENTAL CRUST=BASALT
• C) LESS THAN 1% EARTH’S MASS
• D) COMPOSITIONAL LAYER=ALUMINUM,
SILICON, OXYGEN
Mantle
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B)
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MANTLE
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MADE OF 3 PARTS… COMPOSITIONAL LAYER
A)LITHOSPHERE
B)ASTHENOSPHERE
C)MESOSPHERE
***REMEMBER “LAM”
MOST MASSIVE LAYER OF EARTH=67%
VOLCANOES UNDERWATER HERE
Part of mantle and crust..Lithosphere
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B)
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LITHOSPHERE
• PART OF CRUST AND MANTLE
• TECTONIC PLATES FOUND HERE..PIECES
• THESE TECTONIC PLATES/PIECES OF THE
LITHOSPHERE “FLOAT” ON TOP OF
ASTHENOSPHERE
• PHYSICAL LAYER OF EARTH…
• “PH” IN LITHOSPHERE=PHYSICAL
Middle
part of mantle..Asthenosphere
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ASTHENOSPHERE
• MIDDLE PART OF MANTLE
• PLASTIC, SOFT LAYER(THINK-LAFFY TAFFY)
• TECTONIC PLATES FLOAT ON TOP OF
ASTHENOSPHERE
• “PH” IN ASTHENOSPHERE=PHYSICAL LAYER OF
EARTH
Lower part of mantle..Mesosphere
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MESOSPHERE
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LOWER PART OF MANTLE
STRONG PART OF MANTLE
THICKEST, BIGGEST PART OF MANTLE
“PH” IN MESOSPHERE=PHYSICAL LAYER OD
EARTH
The Core…
• Item to remember…
• A)
CORE
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COMPOSITIONAL LAYER OF EARTH..
CONTAINS 2 PARTS..
A) OUTER CORE
B)INNER CORE
33% OF EARTH’S MASS
HOT, HOT, HOT-HIGH TEMPS
Outer Core…
• Items to help you remember..
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OUTER CORE
• PHYSICAL LAYER OF EARTH
• LIQUID PART
• MADE OF MAINLYNICKEL AND IRON
Inner Core..
• Items to help you remember…
• A)
• B)
INNER CORE
• PHYSICAL LAYER OF EARTH
• SOLID PART
• MADE MAINLY OF NICKEL AND IRON
Bonus Wrap up
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