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How Earth Formed loading

The Big Bang, early changes to the earth's atmosphere, and the development of oxygen on our planet.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
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    History of the Universe

    History of the Universe

    by CK-12 //basic

    This is an interesting interactive that shows what happened immediately following the Big Bang. Make sure you click on all of the pictures along the top!

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