The hypothesis is that singers will be better able to hit high pitched notes before drinking cold water.

You will have 5 singers from a school or church choir, or band, a keyboard, piano or organ, 5 drinking glasses, 1 bottle of lukewarm drinking water, and 1 bottle of ice cold drinking water. The singers will drink a glass of lukewarm water and then rest for 15 minutes. Then, the musician will lead the singer by playing on the keyboard, testing whether the singer is able to hit the same notes that are being played. The singers will then drink a glass of ice-cold water and then rest for 15 minutes.

You will need 5 singers from a school or church choir, or band, a keyboard, piano or organ, 5 drinking glasses, 1 bottle of lukewarm drinking water, and 1 bottle of ice cold drinking water.

The results showed that the number of notes that the singers were able to reach reduced after drinking the ice cold water. This supports the hypothesis that singers will be better able to hit high pitched notes before drinking cold water.

This science project is interesting because it shows how something as simple as drinking cold water can affect a singer's vocal range.

Experiment variations to consider include getting the singers to consume dairy products for a week and then conducting the experiment, and using children of different ages and genders to compare results.

These videos explain the science behind this project and demonstrate key concepts used in the experiment.