Question

why can light waves travel through a vacuum and sound waves cannot

Answer 1

Light waves are a particle and a wave. The light provides its own particle.

Sound waves are the vibration of other particles. Without any other particles present (like in a vacuum), there is nothing for the sound wave to cause to vibrate, so the sound wave can't travel through the vacuum.

Answer 2

medal plz

Answer 3

Sound is a mechanical wave, meaning it's propagation requires the existence of a medium.

Answer 4

@BioEpic and @MAli13chineta are right. :)

Answer 5

Bioepic is right!

Answer 6

Thanks!