Sound is composed of particles moving in a continuous wave. Daniel A. Russell, CC BY-NC-ND. Controlling where sound goes is difficult because of a phenomenon called diffraction – the tendency of ...

To understand why there’s no sound in space, first consider how sound works. Sound is a wave of energy that moves through a solid, a liquid or a gas. Sound is a compression wave .

To understand why there’s no sound in space, first consider how sound works. Sound is a wave of energy that moves through a solid, a liquid or a gas. Sound is a compression wave .

A 15-year study has revealed the cosmic background noise of gravitational waves echoing across the universe for the first time.

Identify the features of a sound wave and learn about pitch, frequency, amplitude and loudness in this guide for KS3 Physics students aged 11-14 from BBC Bitesize.