ENVS 1060 Study Guide - Final Guide: Siltstone, Blastoid, Glacier Terminus

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Document Summary

Unit 1: origin of the solar system and the earth. Before 13. 7 billion yrs ago (13. 7ga) the entire mass of the universe was at a single point. This date is still in debate could be ranging from 8-18 billion years. The point in space was hot and dense and in nitely small. At this point no atoms existed, nothing gin the universe existed. About 13. 7 ga the singularity point became unstable and exploded in the big bang, scattering subatomic articles everywhere into cold space into two separate stages. In ation stage: extremely rapid expansion (a factor of 10^50 to about the size of a grapefruit in 10^-32 seconds extremely high temperature (10^27 degrees k) Positive pressure expansion: a more leisurely rate of expansion that continues today. Evidence for the big bang can be seen in the visible light from objects of our universe. Distant objects appear redder than those closer to us b/c they are moving away form us faster.