CHEM 222 Lecture Notes - Cascadia Subduction Zone, Rayleigh Wave, Cosmochemistry
28 Apr 2014
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Document Summary
The age of the oldest mineral on earth, zircon is 4. 4 billion years old. The age of the oldest rocks from the acasta gneiss complex is about 4 billion years old. Oldest rocks found on the moon are about 4. 44 billion years old. The sun"s process of energy is created by the fusion process which burns hydrogen into helium. The big bang produced a lot of hydrogen and helium with a little bit of lithium and beryllium within the first few seconds. The big bang happened about 13. 7 billion years ago. The main-sequence of stars according to the hertzsprung-russell is called the hydrogen-helium fusion stage, which is the stage in which our sun is in now. Absolute magnitude is the magnitude of the star itself, apparent magnitude is just what it seems like. The further away you are from the star, the less bright that it seems.
