ENVR 202 Lecture Notes - Radiometric Dating, Half-Life, Fot
10 Mar 2013
School
Department
Course
Professor
Document Summary
Chance, history, necessity (something that is predictable, that will follow as a result of physical laws) Evolving earth ch 10, pages 1-9 origin of solar sys, earht, atmosphere and the moon. Hard earth is our only example. How do we reconstruct the steps leading to an event that happened only once: worth thinking about, how do we approach this concept. Begins with death of a previous one (star: we can see these star deaths , a star becomes a nova or supernova, destroying itself and it s solar sys. At the same time as it dies, elements are made and the seeds of a new solar sys are created: all elements of periodic table built during that high energy reaction. Something like this happened ~5 billion yrs ago. Remnants of a destroyed solar sys are visible: nebula diffused clouds of gases and dust, ex: crab nebula in constellation taurus. Ring like pattern w/in the cloud of gas and dust.
