2 Crust 5 – 100 km thick Less than 1% of Earth’s mass Temperature_ 0 C⁰ – 1,000 C⁰It’s the thinnest layer of the EarthContinental Crust_ made of oxygen, silicon, & aluminumOceanic Crust_ is denserOceanic Crust_ has twice as much iron, calcium and magnesium
3 Mantle It is 2,900 km thick Contains 67% Earth’s mass Temperature_ 1,000⁰ C- 3,700⁰ CMantle rock pushes to surfaceOcean floor contains magma from underwater volcanoesContains more magnesium and less aluminum and siliconMantle is denser than crust
4 Outer Core 1/3 of Earth’s mass_ Temperature 3,700⁰ C – 7,000⁰ C Radius is kmMade of ironHas smaller amounts of nickel;Almost no oxygen, silicon, aluminum or magnesium
5 Inner Core Solid layer of core Made of iron Has smaller amounts of nickel;Almost no oxygen, silicon, aluminum or magnesium
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