We found that if we filled the glasses with different amounts of water they will make different pitches. To get a low pitch we filled the glass to the brim. To get a high pitch we filled the glass with a smaller amount of water.
Ms Tan and some of our friends wet their thumbs and rubbed the rims of the glasses to make different sounds. This is what some of us thought.
Vinnie: the sound is haunting
Holly: the sound is so high
Ms Tan: how can we make the pitch for this glass lower?
Amanaki: add more water
Charlie: can we try the glass with no water?
Do you think the pitch was higher or lower?
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