Homemade music, fueled by a neat science experiment.
What's Going On?
The lower the water level, the higher the pitch. Consequently, the higher the water level, the lower the pitch! This is called an inverse relationship. When the jars are tapped, sound waves travel through the water. When the water levels are higher, the sound waves have more water to travel through, making larger vibrations and a lower pitch. On the other hand, lower water levels cause the sound to have less water to travel through and cause smaller vibrations and a higher pitch.