A stream of air breaks out of a metal pipe: Listen & Download A stream of air breaks out of a metal pipe .mp3 Error! Change your browser, please! ⇓ Download Mask breathing ⚠ Inflating a mattress ⚠ Soccer ball ⚠ Helium balloon ⚠ Oxygen balloon ⚠ Air compressor operation ⚠ Air flow ⚠ Air pressure ⚠ Air is blown through a glass tube ⚠ Wind tunnel ventilation ⚠ Suction action of air ⚠ Fighting the fire with blacksmith furs ⚠ ★★★★★