When iron filings are sprinkled around a bar magnet (that is not fractured or broken), the pattern that forms shows that field lines _____________. When iron filings are sprinkled around a bar magnet (that is not fractured or broken), the pattern that forms shows that field lines _____________. point straight out in all directions form closed loops that leave the north pole and enter the south pole leave the middle of the bar and enter the ends leave the ends of the bar and enter the middle