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outermost layer of the earth

Facts about the crust

all different types of rocks, least dense layer of the earth, makes up 1% of the Earth's Mass

Facts about the oceanic crust

5-10 km thick, below the ocean

Facts about the continental crust

15-70 km thick, thickest under the mountains

Mohorovicic Discontinuity

the breack between the crust and upper mantle

Facts about the mantle

makes up 83% of the Earth, extends to a depth of 2900 km

Facts about the upper mantle

rigid, crust + upper mantle = lithosphere

Facts about the lower mantle

plastic, made up of rock called peridotite, the "parent" rock of the crust

Facts about the outer core

molten iron, extends to a depth of 5140 km

Facts about the inner core

solid nickel/iron, creates the magnetic field, center is 6375 km from the surface

Order of the layers

crust, upper mantle, lower mantle, mantle, outer core, inner core

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