Waves and Sound Information about Waves and Sound Sound waves can be pictured as looking like a toy slinky.
Sound waves are longitudinal waves.
With sound waves, amplitude refers to the loudness of the sound. With sound waves, when the amplitude increases, the loudness increases. If a sound wave strikes your eardrums very often, it occurs with high frequency . A high frequency wave means that the sound will have a high pitch . We can tell from the sound of a train whistle whether it is coming toward us or going away.