Glass

The video tutorial explains how sound frequency is affected by the presence of water in a glass. It describes how an empty glass produces a lower frequency sound compared to a filled one. The tutorial further explores the mechanics of sound creation by detailing how rubbing a finger along the glass's rim causes vibrations, leading to sound production.

What is the relationship between frequency and the sound produced by the glass?

Describe the process that occurs when your finger drags across the top of the glass.