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Earths Interior Structure
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It is made up of four main layers.
Earths interior structure. The core is composed mostly of iron fe and is so hot that the outer core is molten with about 10 sulphur s. Earth has a diameter of about 12 756 km 7 972 mi. Earth s interior webquest student links.
The earth s interior is composed of four layers three solid and one liquid not magma but molten metal nearly as hot as the surface of the sun. An outer silicate solid crust a highly viscous asthenosphere and mantle a liquid outer core that is much less viscous than the mantle and a solid inner core. However the depth of drill holes and therefore the direct observation of earth materials at depth is severely limited.
Earth s internal structure go to. Earth s crust lithosphere and asthenosphere go to. The rock units and layers near the surface are understood from direct observation core samples and drilling projects.
The earth s interior consists of rock and metal. A liquid molten core of nickel and iron. A global crustal model go to.
The deepest layer is a solid iron ball about 1 500. 1 the inner core. Earth interior structure it is 3 950 miles 6 370 km from the earth s surface to its center.
Earth s layers diagram go to. Scientific understanding of the internal structure of earth is based on observations of topography and bathymetry observations of rock in outcrop samples brought to the surface from greater depths by volcanoes or volcanic activity analysis of the seismic waves that pass t. The inner core is under such extreme pressure that it remains solid.
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