Team Aqua have been learning how sound can vibrate inside bottles.
We explored sound vibrations by using 2 different sized bottles and blowing inside them to make a noise. We discovered that it wasn't the bottle vibrating, it was actually the air inside. In one bottle we had a high pitch and in another bottle we had a low pitch. We concluded that the more air (bigger bottle) had a low pitch and the less air (smaller bottle) had a high pitch.