GEOL 101 Study Guide - Comprehensive Final Exam Guide - Sulfide, Mohs Scale Of Mineral Hardness, Mineral
20 Nov 2018
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Document Summary
Science is a methodological activity, discipline, or study. That the earth was made by a series of catastrophic events. Earth has been formed by slow & steady natural processes over vast stretch of time. Both gradual processes & sudden events are important. Discover clay, soot, and iridium (rare on the earth) layers. One of eight planets revolving around the sun. 200 billion- 10 trillion galaxies in the visible universe. Approximation age of the universe is 13. 8 billion years. Evidence: *cosmic microwave background radiation, abundance of primordial elements, early versus recently formed galactic structures are different. Time zero- all matter contained in one volume-less point. 1 million years- nebulae form from hydrogen & helium. Hu(cid:271)(cid:271)le(cid:859)s la(cid:449)- amount of red shift is proportional to an objects distance from earth, the universe is expanding. Red shift- realized that the distance galaxy was moving away.
