making+soiund+with+glasses+of+water


 * __Creating sound with glasses of water- __**

Take a number of identical glass cups and fill each with a different amount of water, the cup with the least amount of water will have a higher pitch than the others, and the one with the most will make the lowest sound. Glass has a natural frequency that the glass vibrates at called a resonant frequency, and when the water is added to the glass, you are forcing it to vibrate. The motion sets up a wave of vibration that travels through the glass, the sound or pitch that you hear is the frequency of the sound waves travelling through the glass. When you tap a glass with a lot of water the pitch is lower because there are fewer vibrations. Since the cup has one open end and one closed end it is known as a closed air column.




 * __Bibliography:__**

>>>[] _to_the_top_it_has_a_low_pitch_why_does_this_happen

>>>[]

BOBBI RAE THIBAULT