Question

conduct an experiment and collect data to show the effect of changing the distance between the compass and the bar magnet on the strength of the magnetic field.
how does increasing the distance between the compass and the bar magnet affect the strength (magnitude) of the magnetic field?
it decreases.
it increases.
it stays the same.

Explanation:

The strength of a magnetic - field follows an inverse - square law with distance. As the distance between the source (bar magnet) and the point of measurement (compass) increases, the magnetic field lines spread out over a larger area, resulting in a decrease in the field strength.

Answer:

It decreases.