GEOL 1110 Study Guide - Comprehensive Final Exam Guide - Earth, Water Cycle, Volcano
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Differentiate between the geocentric model and heliocentric models for the. 1. organization of the universe and the approximate era the different models existed within geocentric model earth is the centre 168 ad. Haliocentric model - sun is the centre 1543 galileo times. Define a star all of space and energy and the matter within it composed of 100 billion galaxies. A fixed luminous point in the night sky that is a large, remote incandescent body like the sun, often ordered in celestial bodies. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction. Explain the big bang theory: 13. 8 billion years ago, a small, dense and hot point in the universe, composed of all matter, brought subatomic particles into existence within seconds. Within 20 minutes, hydrogen atoms formed, then helium formed, and a 3:1 ratio was formed (hydrogen:helium) 3:1 patchy clouds consisting mainly of helium and hydrogen form the nebulae.
