Make a homemade thermometer! #diycrafts

A fun DIY science project with your kids! Have fun making a fully functioning thermometer with household items!

[TigersRforever]

Wouldn't boiling water just boil out of the straw....??

[alexfrank]

Cool in theory but very wrong in practice.
Water through a glass is not going to absorb enough heat fast enough to raise the water level effectively. There's a reason they used mercury instead water in the thermometers.