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Thursday, 28 July 2011

Air

Air is a mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.

One cubic centimeter of air contains almost 30,000,000,000,000,000,000 molecules.

Wind is moving air.

Air can be polluted by some gases (such as ozone and carbon monoxide), smoke, and ash. This pollution is one of the reasons for global warming, by causing the "greenhouse effect".


Air can be forcefully expelled from a dolphin's blowhole at a speed of 100 mph.

A jar of fresh air sells for $860 in China.

The air in potato chip bags serves a purpose. It is Nitrogen and preserves crispiness and provides cushion during shipping.

Your ears pop in airplanes because your ear has air trapped in it and as the atmospheric pressure changes, it causes pressure on your eardrum.

Humans need to breathe about 20,000 one liter bottles of air every day.

15% of the air you breathe in a metro station is human skin.

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