Earth Sciences 1086F/G- Final Exam Guide - Comprehensive Notes for the exam ( 23 pages long!)
29 Mar 2018
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Hypothesis - an educated guess based upon observation. Theory - summarizes a hypothesis that is supported by repeated testing and observation, considered valid unless there is firm evidence to dispute it. Law - explains a body of observations, at the time it is made no exceptions will have been found to that law. Law describes how something happens, theory describes why . The big bang theory is an effort to explain exactly what happened at the very beginning of the universe. At the birth of the universe, time and space were created in a gigantic expansion that emanated from a singularity. ". Singularity" is an area in space-time where gravitational force is so high that all known laws of physics break down and do not apply. Recession of stars/galaxies as described by hubble"s law. The characteristics of cosmic microwave background radiation. He demonstrated that there were many galaxies in the universe - not just the one we are in.
