Earths Composition Lesson 1 Layers of the Earth

Lesson 1: Layers of the Earth SC. 7. E. 6. 1 • Student will

Earth is like a peach!! • Skin of the peach is the crust •

Layers of the EARTH CRUST State of Matter: Solid Composition: Silicon & Oxygen Density:

Crust • Brittle rocky outer layer of the Earth. • Thinnest of the layers

Mantle • Thick middle layer in the solid part of the Earth • Immediately

Inside the Mantle Lithosphere • The crust and part of the upper mantle =

Outer Core • Made of a thick fluid like LIQUID iron • Directly below

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Earth’s Composition

Lesson 1: Layers of the Earth SC. 7. E. 6. 1 • Student will be able to describe the different layers of the earth.

Earth is like a peach!! • Skin of the peach is the crust • Meat of the peach is the mantle • Pit of the peach is the core

Layers of the EARTH CRUST State of Matter: Solid Composition: Silicon & Oxygen Density: Less than all 3. 9 g/cm 3 Distance below surface: Outer surface Thickness: Thinnest layer MANTLE State of Matter: Solid Composition: Magnesium & iron silicates Density: 3. 9 g/cm 3 Distance below surface: 670 -2900 km Thickness: Thick INNER CORE State of Matter: Solid Composition: Iron Density: 13. 0 g/cm 3 Distance below surface: 6, 370 km Thickness: Thickest layer Because of it’s density OUTER CORE State of Matter: Liquid Composition: Iron Density: 11. 1 g/cm 3 Distance below surface: 5, 150 km Thickness: Thick fluid like Material.

Crust • Brittle rocky outer layer of the Earth. • Thinnest of the layers • The least dense • Made of: Silicon & Iron • Layer where we live!!!! 2 Parts • Continental Crust • Oceanic Crust

Mantle • Thick middle layer in the solid part of the Earth • Immediately below the crust • Convection currents in the mantle cause the plates above to move • Made of magnesium 2 Parts • Upper Mantle • Lower Mantle BONUS FACTS: 2900 km below earth’s surface (7, 250 laps around 400 meter track)

Inside the Mantle Lithosphere • The crust and part of the upper mantle = lithosphere • Less dense than the material below it so it “floats” Asthenosphere • The plastic layer (easily flowing) inside the mantle • The lithosphere float on top of the asthenosphere =PLATE TECTONICS

Outer Core • Made of a thick fluid like LIQUID iron • Directly below the mantle BONUS FACTS 5, 150 km below earth’s surface (12, 875 laps around a 400 meter track) Inner Core Liquid Iron Solid IRON Liquid Iron • Spinning SOLID ball made of iron and nickel • Layer with the most density BONUS FACTS 6, 370 km below earth’s surface (15, 925 laps around a 400 meter track)