The realities of air pressure and the power it holds has been recently explored by both Year 7 classes at Cornerstone.  Under the creative eye of Mr Howes, students have witnessed the power displayed by air pressure on a metal can.

Mr Howes challenged some of the more athletic students to try and crush the can with their own strength, but none were successful.  Then after heating water inside the can, and replacing the lid, he let the effects of air pressure take it’s course, and the results were dramatic.

Cans simply crumpled as the contents cooled, reducing the air pressure inside the can and increasing the effect of the external pressure.  The result was can crushing on a big scale.

Science you can see.  Terrific!