Wednesday, March 6, 2013

Oxygen

What is oxygen???

Well, oxygen is pretty easy to explain. Without oxygen, nothing on earth could survive. Plants, animals, and humans all need oxygen to survive. In fact, more than 2/3 of your entire body is made up of oxygen. The form of oxygen that we breathe, gas oxygen, is odorless, tasteless, and colorless. The same cannot be said for liquid oxygen, however... Read on to learn more.

Liquid oxygen and it's many colors

Liquid oxygen is blue.Liquid oxygen is far different from gas oxygen. For one, in liquid form it is visible. Second of all, it has many colors in liquid form. It's standard color is a periwinkle blue, as seen on the left, but when at an exaggerated  point it is responsible for the red and yellow-green colors in an aurora. 

Where does oxygen come from?

Oxygen was once believed to come from various plants and vegetation, yet this theory was proved false. If you burned up all the plants and vegetation in the world, you would use up less than 1% oxygen. Water is the true source of oxygen.When it evaporates, it lets off clouds of H2 and O. The H2, being light enough to drift, goes into space, leaving earth with a nice balance of oxygen.


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