GEOL 1001 Chapter : 8 29 Geology 1001
Document Summary
Part 1: the formation of the universe: learn the basics of the big bang theory, 13. 7 billion years ago (ga short for giga annum, latin for billions of years); bound at one point and exploded. Has to orbit a star: geocentric: belief that everything revolves around the earth, heliocentric: belief that everything revolves around the sun, 8 planets: inner planets (smaller than other planets) mercury, venus, earth, mars; Rocky/terrestrial planets (all have dense iron core/alloy): all have shell of rock: outer planets jupiter, saturn, uranus, neptune; jupiter and saturn (gas giants), Uranus and neptune (ice giants: asteroids: chunks of rock/metal, comets: ice with long tails. Definitions: universe: all matter and energy, matter: anything you could touch or anything that takes up space, mass: amount of matter, weight: mass x gravity = weight (w, density: mass / volume = density (d) Work: vibrate, spin, move from one place to another; provided by heat, gravity, light, magnetism.
