it's because well at least i think because there is more air for the sound to vibrate in!!
please leave more answers and tell me if i am right or wrong!!
thanx .
Surely the pitch is lower when the length of air available is greater, thus when there is LESS water in the bottle?
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The pitch of a sound produced when an object is struck is linked to its resonance frequency. When there is less water present, the hollow container produces a higher resonance frequency and hence a high pitch. Conversely, when there is more water present, the resonance frequency decreases, resulting in a lower pitch.
the more the vibration, the lower the pitch.
More or less space for the vibration.Stay in school. Hugs before drugs.
with less water in it
A full bottle of water
Derelict
mineral water bottle coke bottle castrol oil bottle soy sauce bottle juices bottle
hot
No it weighs much more!!
My idea is that the water vibrates and sends sound waves through out the water and up the bottle creating the echo. I think that the more water the more high pitched the sound because since in water there are less particles to interfere with sound waves and water muffles sound. So in the bottles with less water the sound is deeper and lower pitched because the sound waves are mostly reverberating against the bottle.
The more water there is in the bottle the shorter air column.The bottle with the smallest amount of water has a longer air column.The shorter the air column,the faster the vibration and the higher the pitch.the longer the air column,the slower the vibration and the lower the pitch. ADD ME ON FACEBOOK AT NICKIESHA KADIJAH REID