Quote:
Originally Posted by Adam_148
most of the continents on this earth tend to, are they not rocks?
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Um, continents are not floating, at least not on water. There is a completely stable land mass that builds up to a peak (though with continents, usually a plateau) that sticks above the water. Now, the tectonic plates are floating on magma, but because magma has a different density than water, denser things can float on it.