I this the "Ask Shamiri things you didn't know" day?

But ok ... to answer you:

flames get their familiar shape from air convection. Warm air rises and the stream/flow of air tries to rush into the warmest spot, right above the flame. so all the air moves towards one point above the flame, giving it a pointy/flame look. The rest of the flame stuff you can google yourself :)

Earth's rotation: gravitation between planets and magnetism generated by molten rock/metal.

Why do people have feelings? I really don't know but it will probably have something to do with survival instincts or some such.
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Extraordinary claims require extraordinary evidence - Carl Sagan