Layers of the Earth
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11 terms
Terms | Definitions |
|---|---|
 Crust | 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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