Layers of the Earth

Outside and Inside Circles of Influence

How can we talk about the layers of the Earth? Outermost Innermost Outer to Inner (put them in order) Inner to Outer (put them in order) Physical Layers

Outermost and Innermost Layers Outermost: The layer that is outside of all the other layers The Crust Innermost: The layer that is inside of all the other layers The Core (or Inner Core)

Layers of the Earth “CRMOC Inc.” Outer to Inner: (starting from the outside layer) Crust, Mantle, Outer Core, Inner Core Inner to Outer: (starting from the inside layer) Inner Core, Outer Core, Mantle, Crust

Crust Definition: Hard and rigid, the earth's outermost and thinnest layer (mostly made of basalt and granite).

Mantle Definition: This dense layer of the earth is made of hot, semisolid rock (silicon) and is located directly below the crust.

Outer Core Definition: This layer of the earth lies between the mantle and the solid inner core. It is the only liquid layer, a sea of mostly iron and nickel

Inner Core Definition: The innermost layer of the earth, an extremely hot, solid sphere of mostly iron and nickel.

Physical Layers of the Earth “LAM”

Lithosphere Definition: the rigid outermost part of the earth, consisting of the crust and upper mantle

Aesthenosphere Definition: The plastic layer of the mantle, on which pieces of the lithosphere move

Mesosphere The strong, lower part of the mantle that is beneath the asthenosphere

Physical Layers & Composition Layers “LAM” and “CRMOC Inc.” Solid nickel & iron Liquid nickel & iron

Tectonic Plates Definition: Several large slabs of the lithosphere that hold the continents and oceans and are slowly but constantly moving around the earth.

BONUS INFORMATION… What layer makes up 33% of the Earth’s mass? What layer do we live on?

Practice! Write as many sentences as you can about the layers of the Earth using the word “between”.

Practice! Write a sentence about the layers of the Earth using the word “outermost”.

Practice! Write a sentence about the layers of the Earth using the word “innermost”.

Practice! What are the layers of the Earth (from the innermost layer to the outermost layer)

Practice! What are the physical layers of the Earth (from the outermost to the innermost layer)?