How do we know that the structure of the earth exists?
All matter of the Earth are attracted toward's the center of the
Earth, by the force that is proportional to the mass ( m ) of the
matter and is inversely proportional to square of the distance
This force creates higher-pressure, and consequently higher
temperature, as the distance from the center decreases.
So, the density ( on the average ) of the layers increase, towards the
Thes density variations are revealed by the vast, compiled from
the research findings on propagation of primary and secondary
seismic waves, just after earth tremors and earthquakes, over
Despite that, as
center is a null or near-null (
components, in infinitude, are self balancing in this near-spherical