Evidence of Fields Practice Test

A student sprinkles iron filings on a sheet of paper placed over a bar magnet and gently taps the paper. The filings form curved, organized lines and are most crowded near the ends of the magnet. What do these observations show?

A student places a bar magnet on a table and moves a compass to many different spots around the magnet (without touching it). At each spot, the compass needle points in a different direction. Which observation is the best evidence that a magnetic field exists in the space around the magnet (not only at the magnet)?