The Gas Laws Are Out of This World!

A few years ago, we launched a weather balloon during our summer science camp. The balloon reached an altitude of 30 km (100,000 ft)! Among other things, this project ended up being a great way to teach campers about the gas laws and how atmospheric pressure decreases with altitude. 

Big Barometer - Demonstration

This demonstration shows the construction of of an eleven foot high barometer made with a concentrated solution of potassium tetraiodomercurate(II).

Boyle's Law: J-Tube

The relationship between the volume of a gas and the pressure it exerts, known as Boyle's Law, is shown with a J-tube.

Barometer Shape

Barometers of different shapes all have the same level of mercury.