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Layers of the Earth ... By analyzing the seismograms from many earthquakes, scientists have discovered that three main levels or shells exist within the Earth: ... Planet Earth...
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www.thetech.org/exhibits_events/online/quakes/inside/
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The upper mantle makes up 10.3% of the Earth's mass, extending a depth of 6-250 miles (10-400 kilometers). A relatively large portion when compared to the other interior layers. This layer is not completely made of solid minerals for scientists speculate that the asthenosphere could be partly liquid molten.
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library.thinkquest.org/28327/html/universe/solar_system...
library.thinkquest.org/28327/html/universe/solar_system/planets/earth/interior/layers_of_earth.html
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The earth is divided into four main layers: the inner core, outer core, mantle, and crust. The core is composed mostly of iron (Fe) and is so hot that the outer core is molten, with about 10% sulphur (S). The inner core is under such extreme pressure that it remains solid. ... Earth layers diagram...
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www.seismo.unr.edu/ftp/pub/louie/class/100/interior.htm...
www.seismo.unr.edu/ftp/pub/louie/class/100/interior.html
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Inside the Earth; Printout: Label the Inside of the Earth; The Earth is made of many different and distinct layers. The deeper layers are composed of heavier materials; they are hotter, denser and under much greater ... ; Outer Layers of the Earth; Label Me! Printout; Label the parts of the mantle and crust. Answers...
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www.enchantedlearning.com/subjects/astronomy/planets/ea...
www.enchantedlearning.com/subjects/astronomy/planets/earth/Inside.shtml
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Structure of the Earth - Wikipedia, the free encyclopedia
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The interior structure of the Earth , similar to the other terrestrial planets, is layered. These layers can be defined by either their chemical or their rheological properties. The Earth has an out...
en.wikipedia.org/wiki/Structure_of_the_Earth
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If you could cut Earth in half, you would find it made up of layers. At its center is a solid core of metal, which is surrounded by a liquid metal core. The liquid core spins as the earth rotates, which creates Earth's magnetic field.
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www.sio.ucsd.edu/voyager/earth_puzzle/look_beneath.html
www.sio.ucsd.edu/voyager/earth_puzzle/look_beneath.html
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The outermost layer of the Earth is the crust. In the oceans, it is about 4 miles thick. On the thickest continents, it extends some 40 miles into the Earth. Below the crust is the mantle, a layer of weaker, hotter rock some 1,800 miles thick.
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www.pbs.org/wnet/savageearth/animations/hellscrust/main...
www.pbs.org/wnet/savageearth/animations/hellscrust/main.html
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Below: This view drawn to scale demonstrates that the Earth's crust literally is only skin deep. Below right: A view not drawn to scale to show the Earth's three main layers (crust, mantle, and core) in more detail (see text).;
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pubs.usgs.gov/publications/text/inside.html
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