Earth’s Composition.

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Presentation transcript:

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 Bring in some peaches

Layers of the EARTH INNER CORE State of Matter: Solid Composition: Iron Density: 13.0g/cm3 Distance below surface: 6,370km Thickness: Thickest layer Because of it’s density CRUST State of Matter: Solid Composition: Silicon & Oxygen Density: Less than all 3.9g/cm3 Distance below surface: Outer surface Thickness: Thinnest layer MANTLE State of Matter: Solid Composition: Magnesium & iron silicates Density: 3.9g/cm3 Distance below surface: 670-2900km Thickness: Thick OUTER CORE State of Matter: Liquid Composition: Iron Density: 11.1g/cm3 Distance below surface: 5,150km 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 Asthenosphere The crust and part of the upper mantle = lithosphere Less dense than the material below it so it “floats” The plastic layer (easily flowing) inside the mantle The lithosphere float on top of the asthenosphere =PLATE TECTONICS

Outer Core Inner 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) 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) Liquid Iron Solid IRON