2006-09-03 06:06:01 · 8 answers · asked by mani 1 in Science & Mathematics ➔ Biology
What you're hearing is the sound of the water echoing inside of the container. As the container fills the available air space decreases so the sound waves have less & less space to move around in. This increases the frequency of the sound wave pattern, which in turn increases the pitch, making it go higher & higher. The principal is the same for musical instruments such as the slide trombone and slide whistle.
2006-09-03 06:10:08 · answer #1 · answered by My Evil Twin 7 · 0⤊ 0⤋
Empty vessel has certain frequency. Full vessel has certain frequency different from the other.
When we fill the vessel with water it goes through all the in between frequencies.
PS
Just record this change , then fill the same vessel with something other than water, milk or oil,record that also, replay them to compare. See the difference.
2006-09-03 13:32:10 · answer #2 · answered by minootoo 7 · 0⤊ 0⤋
Like a car passing by you, the sound changes as the water hits higher and higher up in the vessel. There becomes less "wall space" for the sound to bounce off of. There is a certain point of ressonance when the sound is loudest.
2006-09-03 13:11:12 · answer #3 · answered by Armin 2 · 0⤊ 0⤋
Sound changes because the height of the water column changes the length of the air column and changes the pitch. The taller the air column the lower the pitch and the taller the water column the higher the pitch.
2006-09-03 13:11:20 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Water volume
2006-09-03 13:14:35 · answer #5 · answered by Celtic Tejas 6 · 0⤊ 0⤋
sound is produced due to reflections that occur
when the vessel is empty then it makes more sound but as we fill it up its intensity go on decreasing as the surrounding echo is lesser.
even u can apply doppler's shift phenomenon in sound
2006-09-04 13:06:48 · answer #6 · answered by OXYMORON.RAJ 2 · 0⤊ 0⤋
'coz the circumference of the container decreases with increase in water when filled up... thats the reason the sound continously changes as they travel inside the container in a circular particular motion.... the freq. changes makes it.. so we hear that continous change of sound..
2006-09-03 16:11:10 · answer #7 · answered by alwin 2 · 0⤊ 0⤋
The sound changes with the volume of the container.
2006-09-03 13:08:36 · answer #8 · answered by wildbill05733 6 · 0⤊ 1⤋