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Andre
#35
Nov3-03, 12:46 PM
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P: 5,460
Prove me wrong
That's not fair, Smart guy, He, who proposes an alternative theory or hypothesis, not in line with the scholar ideas, has the onus of proof, That's rule nr. 1A(1) in science.

How about if I stated that the earth was hollow and prove me wrong

This is the scholar idea:

http://www.gcsescience.com/rk3.htm
http://pubs.usgs.gov/publications/text/inside.html

Below the crust is the mantle, a dense, hot layer of semi-solid rock approximately 2,900 km thick. The mantle, which contains more iron, magnesium, and calcium than the crust, is hotter and denser because temperature and pressure inside the Earth increase with depth. As a comparison, the mantle might be thought of as the white of a boiled egg. At the center of the Earth lies the core, which is nearly twice as dense as the mantle because its composition is metallic (iron-nickel alloy) rather than stony. Unlike the yolk of an egg, however, the Earth's core is actually made up of two distinct parts: a 2,200 km-thick liquid outer core and a 1,250 km-thick solid inner core. As the Earth rotates, the liquid outer core spins, creating the Earth's magnetic field.
Again, if nobody stealthily changed the physical laws for P-waves and S-waves, the mantle is not fluid but semi solid. For (sound) waves it acts as solid. For plate tectonics, hot spots and mantly plumes with dynamics measured over millions of years it acts a bit more as fluid.