1. The problem statement, all variables and given/known data see topic title 2. Relevant equations I think that sound waves are vibrations of particles in a medium. The vibrations continue until the energy is gone. Sound seems to need a medium to travel through. Light can travel in a vacuum. your eye sees it from a source or from an object (reflection, refraction)... 3. The attempt at a solution see my thoughts above. My guess is that they don't interact, but I'm not sure why exactly I think this.