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Layers of Earth
Crust Outermost layer Thinnest under ocean Thickest under continentCrust + top of mantle = Lithosphere
Crust density Least dense overall layerOceanic crust (basalt) is more dense than Continental Crust (granite)
Crust composition Solid rock—mostly silicon and oxygenOceanic crust—basalt Continental crust--granite
Mantle Position Middle layer, thickest layer Top portion called the asthenosphere
Density increases with depth of increasing pressureMantle Density Density increases with depth of increasing pressure
Mantle Composition Hot softened rockContains iron (Fe) and magnesium (Mg)
Core position Inner layer Consists of the outer and inner core
Core density Heaviest material; most dense layer
Core composition Mostly iron and nickel Outer core—slow flowing liquidInner core--solid
Thickness of Layers Crust: (continental) miles thick (1 % of Earth’s volume) Mantle: 1,800 miles thick (84% of Earth’s volume) Outer core: 1,400 miles thick Inner core: 790 miles thick
Inside the Earth.
Journey to the Center of Earth
The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,
1._____heat from inside the Earth 2._____type of resource minerals and metals are 3. _____cutting down all of the trees in an area 4._____crops that replenish.
Layers of the Earth. Composition (What it is made of) Inner Core Outer Core Mantle Crust.
Layers of the Earth. What Are The Earth’s Layers ? Inner Core Outer Core Mantle Crust.
What are the three layers of the Earth
Layers of the Earth.
RAP: All are from Alternative Energy
Inside the Earth Layers that Make Up the Earth. Composition (What it is made of) Crust Mantle Core.
Earth Layers. Inner Core Made mostly of iron and nickel Dense ball of solid metal due to intense pressure Very hot and very dense 1,216 km thick.
Earth’s Inside Earth Pages Inside Earth Pages Interior.
Composition (What is it made of?) Divided into 3 layers: Crust Mantle Core.
Earth’s Layers Standard: 2 Describe the layers of the earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
6-70 km thick 6-70 km thick Very light; only 1% of Earth’s total mass Very light; only 1% of Earth’s total mass Made up of rock Made up of rock Two types.
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