A partially empty soda bottle will produce standing waves in the air above the liquid if you blow across the neck of the bottle. There will be a displacement antinode at the neck and a node at the surface of the soda. What happens if you drink more soda and repeat the experiment? a) no change in the sound produced b) frequency of the sound will increase c) frequency of the sound will decrease d) wavelenth of the sound will increase e) wavelength of the sound will decrease f) pitch of the sound will increase g) pitch of the sound will decrease Which one and why??????? I figure the mass in the bottle will decrease so that might affect it, maybe the wavelength will increase & frequency decrease, not sure about the pitch... actually not sure of any of this. Please help!