What is the primary function of a magnetic field?

To make a magnet visible in the dark

To act as the medium that transmits magnetic force through space

To store potential energy inside the magnet itself

To change the temperature of objects it comes into contact with

A paperclip on a desk slides towards a magnet that is brought near it but does not touch it. Which statement best explains this 'action at a distance'?

The magnet creates a small air current that pushes the paperclip.

The paperclip is made of a material that is naturally attracted to all metals.

The paperclip entered the magnet's invisible field, which exerted a force on it.

The magnet heats up the paperclip, causing it to move.

The physical surface of the magnet

A visible aura of light around a magnet

An area of influence where a magnetic force is exerted

The sound a magnet makes when it attracts metal