ECON 2010 Chapter : Chapt 4
Document Summary
Learning objectives: what"s the big bang theory, where is elements formed, basics of planets. Matter= anything you can touch or takes up space. (vibrate, spin, move from one place to another) Matter and energy was bound in 1 point. Energy= ability to do work (1) big bang theory. ------formation of all hydrogen (h) atoms within a few seconds of the explosion. ------3 minutes from the explosion the temperature is less than 1 billion degrees. ------cooling causes patchy clouds, which is nebulae (h + he) (2) where the other elements formed (3) basics of planets. Orbits a star (sun revolving around the earth= geocentric) most accepted theory back in the day (earth revolve around the sun= heliocentric) As earth pulled in debris matter was squeezed into smaller volume. 3 major chemical divisions (iron, oxygen, silicon, magnesium) 91. 2% of earths elements= fe, o, si, mg. Rock mostly silicates (have something + sio2) (quartz)
