One of my goals is to play music during the inbetween times of our day. One day this week, I noticedy my son playing with the sound, using his hand to block it.
Since sound waves are physical waves, meaning they travel from molecule to molecule, they can be blocked by placing a something in front of them. Some of the wave's energy was absorbed by my son's hand instead of continuing through the air. We perceive the decreas in energy as the sound becoming quieter .
When the waves ran into his hand, they bent. We perceive bent waves as a distortion in sound which changes the pitch.
How do you like to play with sound?