Musical Water Glasses

Musical Water Glasses
Please describe with as much detail as you can how an instrument makes sound.  Pick at least two examples to describe.
Please describe with as much detail as you can how different tones are made with these instruments.
Describe the relationship between frequency and vibration in your instrument.
What happens to the wavelength when the frequency/pitch is getting higher?  Give me two pieces of evidence.
If you were to do this project again, what would be two specific things you would change to make your instrument better?  Describe in detail don’t just name them.