why does the more water I pour into a container, the higher the pitch of the sound goes?

Question

why does the more water I pour into a container, the higher the pitch of the sound goes?

In: 9

Answer 1

The sounds we hear are made by air vibrations. The shorter the spacing between vibrations, the higher the pitch of sound.

As you fill a container with water, the volume of air in the container decreases and the weight of the water prevents the other parts of the container from vibrating. This only allows shorter and shorter spaced vibrations to vibrate through the container, causing higher and higher pitched sound.