sort by best latest
You can help the HubPages community highlight top quality content by ranking this answer up or down.
I think it has something to do with how it was formed. If it was formed from a fault line and exceeds a certain altitude, it will constitue itself as a mountain. Don't quote me on that, I just live in the mountains, I don't study them! :)
Well! Here's a link that pretty much explains it all: http://en.wikipedia.org/wiki/Mountain
I read this several times and now I know about as much as I ever will on the subject. I live in the most mountainous state and I didn't know; now I do!