atmospheric pressure

The landing of the Perseverance rover and the flights of the Ingenuity helicopter on Mars^1,2 have again turned people’s attention to that red planet and to space exploration in general.

In an effort to better understand my high school students' knowledge of what is happening during phase changes, heating curve calculations, and the ever popular can crush demo, I run them through a series of activities.

Have you ever seen experiments, such as the one here, that makes use of air pressure to crush a metal can?