Eclipse

If the ball is on the line, is it in or out?  The laws of soccer state that the whole ball must be outside the whole line for it to be out.  Therefore, a ball on the line is still in play.

Since the whole ball has to be outside the entire line, the bottom of the ball may be sitting outside the line but still be in play because a portion of the side of the ball is still over the line.

Likewise, for a goal to be scored the whole ball must pass over the entire goal line.