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!!!!!!
Click on the "Next" button to read some
interesting facts about the layers!