Question

A student is modeling how different materials interact differently with sound and light waves. What should the student add to a 5-liter container of water to demonstrate a liquid which transmits sound waves but absorbs light waves?

Answer 1

The student should add a small amount of salt to the water. Saltwater is a great example of a liquid that transmits sound waves well due to its density and ability to conduct vibrations, but also absorbs light waves due to its high opacity.