Truly a classic demonstration. Your students will be fascinated by the drinking bird that doesn't know when to stop. Teach thermodynamics and pressure, and have fun at the same time. ChemFax instruction sheet provided.
Ralphie, The Drinking Bird
Discover the cooling effect of evaporation and the effect of temperature on vapor pressure by playing with the drinking bird. It’s been called the “greatest invention in the world” by Homer Simpson!
Flinn Catalog/Reference Manual Page 761
Flinn Middle School Catalog/Reference Manual Page 326