Air crushing Can Experiment

Today we did an experiment to see that the air around us has pressure that is even strong enough to crush a can.

You need to heat a small amount of water in a can until it boils. The water vapour produced pushes air from the can. Quickly invert the can into cold water. The water vapour inside the can will condense causing the pressure inside to lower. The higher air pressure from outside the can is enough to crush it.