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Earth Layers6.1
Earth Layers 6.1
| Term | Definition |
|---|---|
| Crust | solid rock that includes both dry land and ocean floor elements in crust are silicon and oxygen 5-40 km thick |
| Mantle | Solid material magnesium and iron, less silicon and aluminum has convection currents, Denser than crust, slow flowing hot rock |
| outer core | Molten metal is a liquid, high pressure Iron and nickel, causes the magnetic field of the Earth. |
| inner core | Solid metal core, atoms of iron and nickel extreme pressure, high temperatures |
| Oceanic crust | layer of the crust that has the oceans and ocean floor -- basalt rock igneous Thinnest layer densest |
| Continental crust | layer of the crust that has the land is formed on top of -- granite rock igneous Thickest layer less dense |
| Convection current | warm less dense material moves up and the cooler denser material sinks to the bottom with heat the cycle starts again are responsible for the formation of new rocks |
| Lithosphere | layer that includes the crust and the slightly molten layer in the top of the mantle has the continental and oceanic crust has the tectonic plates is a floating ridged layer outer most of physical or mechanical layers |
| asthenosphere | layer of the mantle soft layer flows slowly, pushes colder material out of the way moves the lithosphere part of the physical or mechanical layers |
| mesosphere | lowest part of the mantle has the convection currents is part of the mechanical or physical layers |
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