pressure

The Gas Laws Are Out of This World!

Weather balloon near the edge of space

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. 

Liquid Nitrogen, Gas Laws and Rocket Science

Liquid nitrogen rocket

The “bucket launch” is a fantastic experiment you can do if you have access to liquid nitrogen. Depending upon conditions, we have observed the bucket to launch anywhere from 80 to 160 feet high. See the video.

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.