GEOL 1120 Lecture Notes - Lecture 1: Big Bang, Nuclear Reaction, Falsifiability
Document Summary
Environmental protection started in the 1950"s: 1. Carrying capacity humans use resources and can exceed the earth: 2. Origin of the universe: big bang theory 1520 billion years ago is testable and falsifiable. Matter all in one spot, and one event threw matter in all directions: vs god created the universe. Scientific method: formulate hypothesis that is testable and falsifiable, perform experiments/ collect data to test the hypothesis, analyze the data, accept or reject the hypothesis, theory if experiments keep confirming the hypothesis, it becomes a theory. Origin of the earth: 4. 8 billion years ago, planetary accretion between big bang theory and 105 billion years ago, the stars and the sun were made. Gravitational compression: pv=nrt and when p increases, t has to as well, impact heating, radioactive decay. Internal differentiation: at 4. 8 billion years ago, the earth was homogenous, at 4 billion years ago, it became layered like it is today. Inner core solid, heavy, with fe and n.
