Termites are often regarded as gluttonous creatures because of the billions of dollars of damage their appetites generate every year for homeowners, but would you believe that termites are actually picky eaters? Learn more on this Moment of Science.
Learn about the sensitive skin of alligators on this Moment of Science.
When the bottle vibrates, the water inside has to vibrate with it. Having to move all that water slows down the vibrations of the glass and that in turn slows down the frequency of the sound waves, producing a lower pitch. Adding more water slows down the bottle’s vibrations even more, creating an even lower pitch.