This has got to be another one of those trick questions.
They do not expand, they do not move at all. Everyone is in a fixed position.
Perhaps this analogy will work. Imagine the Earth as a ball of bread, with the lines of latitude as markings for cutting slices. As you cut the lines of latitude, progressing southward, the slices would get larger (expand) as you approach the equator.
But since they are imaginary lines that are there for navigation purposes, what does that have to do with my question?
It was used as an analogy.
Abe: And thank you to Cavediver, Rahvin and others for contributing your time and knowledge. I've been lurking, reading your responses. They're a great read.
Edited by Infixion, : No reason given.