Board Thread:Theories and Rumors/@comment-5984859-20150803195349/@comment-26509603-20161124024030

WhoamI132 wrote: Technically, Earth is just compacted by gravity. And if that's the case, it can't be an element. Lava. Every element in the universe is compacted by gravity, otherwise it would disperse aimlessly and nothing would exist (I don't want to get too far into the physics of it, but that's the gist). My point is, none of the ideas on this thread can be put down for that reason.

As for your lava idea, I kind of like it. But if you'll recall back in Season 1, Kai's Fire Sword caused a reaction with the lava in that volcano (just before Kai reached his True Potential), so that might mean that it is just a part of Fire. Although, in the same episode, Jay used Wind (as part of his True Potential powers), which turned out to be its own element. That means that lava could afterall be its own element.