Summary of the Layers of the Earth,

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Presentation transcript:

Summary of the Layers of the Earth,

Earth Layer Crust Mantle Outer Core Inner Core

Crust Density: Least dense layer overall. Oceanic Crust (basalt) is more dense than continental crust (granite).

Crust Composition: Compared to the mantle, it contains more silicon and oxygen and less magnesium and iron. Continental Crust- Granite Oceanic Crust- Basalt

Crust Picture: Outermost layer Thinnest: under the ocean Thickest: under the continents Crust: Oceanic + Continental =40 km Lithosphere: Crust + Upper Mantle = 100 km

Mantle Density: Density increases with depth because of the increasing pressure.

Mantle Composition: Made mostly of silicon. oxygen, iron, and magnesium.

Mantle Picture: Middle Layer Thickest layer Middle portion called the asthenosphere. (~500 km deep)

Outer Core Density: Between the densities of the mantle and inner core.

Outer Core Composition: Mostly made of liquid metal.

Outer Core Picture: 5200 km

Inner Core Density: Solid and most dense layer.

Inner Core Composition: Mostly made of iron and nickel.

Inner Core Picture: 6400 km

The combo of the cores makes our MAGNETIC FIELD!