Geology - Earth's Interior
INTRODUCTION
For millennia mankind has inhabited the third planet from the sun; the planet that supports life and is know to us as Earth. Although there has been life on Earth for quite sometime, it is only in the past few centuries that man has come to learn about what makes up the interior of this planet.
The English scientist, Isaac Newton, can be seen as a pioneer in regards to learning about the Earth’s interior, as he calculated from his studies of planets and the force of gravity, that the average density of the Earth is twice that of surface rocks and therefore that the Earth\'s interior must be composed of a much denser material¹. Our knowledge of what\'s inside the Earth has improved immensely since Newton\'s time, but his estimate of the density remains essentially unchanged.
So what is this new knowledge of the Earth’s interior?
PRESENT KNOWLEDGE
‘A round sphere with many layers, all varying in thickness, each having it’s own colour and taste…’ this is a......
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