LAYERS OF THE EARTH

CRUST

CRUST

• Thinnest layer
• Made of silicon, aluminum, calcium
• Broken into tectonic plates
• Thinner under ocean than continents

LITHOSPHERE

LITHOSPHERE

• Crust and solid, upper mantle
• Floats on asthenosphere

MANTLE

MANTLE

• Made of molten rock
• Property of plasticity
• Upper part called asthenosphere
• Asthenosphere is solid but moves like liquid
• Up to 3700°C

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OUTER CORE

• Liquid iron and nickel
• Spins to create magnetic field
• Up to 5000°C

INNER CORE

• Deepest, most dense layer
• Solid iron and nickel
• Up to 6000° C (like the sun!)
• Kept solid by pressure