Question

10
cassie has a magnet that she holds over an iron nail. the nail moves toward the magnet before the magnet touches it.
which of the following is true about magnetism?
○a. magnetism is a force that acts at a distance and cannot be seen.
○b. magnetism is a force that must directly touch an object in order to move it.
○c. magnetism is a force that can be seen in the air as it moves an object.
○d. magnetism is not a force, and therefore it cannot move an object.

Explanation:

Magnetism is a non - contact force. It acts at a distance and is invisible. The example of the nail moving towards the magnet before contact shows this.

Answer:

A. Magnetism is a force that acts at a distance and cannot be seen.