Before beginning an experiment, mrs. wilson warns her science class not to drop the bar magnets on the floor. what is the most likely reason for mrs. wilson’s warning?
a. the magnet might lose its magnetism.
b. the magnet might make a startling noise.
c. the magnet might become stuck to the floor.
d. the magnet might cause the floor to become magnetic.

The correct answer is a. the magnet might loose its magnetism. A magnet exerts a magnetic field, which can be seen if one sprinkles iron filings around  a magnet. The field is represented by lines, formed by the filings, that extends from one pole of the magnet to the other. Magnets can lose the ability to generate this field if they are heated to extreme temperatures, Exposed to shock like being hit with an object or falling and exposed to substances that have a demagnetizing effect. 

Alinear relationship would look like a straight line on the graph. it could have a positive negative or 0 slope. so it could be a line potentially going in any direction but it must be perfectly straight.