The Four Layers
The Earth is composed of four different layers. Many geologists
believe that as the Earth cooled the heavier, denser materials sank to
the center and the lighter materials rose to the top. Because of this,
the crust is made of the lightest materials (rock- basalts and granites)
and the core consists of heavy metals (nickel and iron).
The crust is the layer that you live on, and it is the most widely
studied and understood. The mantle is much hotter and has the ability to
flow. The Outer and Inner Cores are hotter still with pressures so great
that you would be squeezed into a ball smaller than a marble if you were
able to go to the center of the Earth!!!!!!
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Click on the "Next" button to read some interesting facts about the
layers!
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