Earth Sciences 1086F/G Study Guide - Midterm Guide: James Webb Space Telescope, Small Solar System Body, Optical Telescope
26 Oct 2016
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Document Summary
Theory: summarizes a hypothesis/hypotheses that is supported by repeated testing and observation. Gigantic explosion from a singularity (area in space-time where gravitational force is so high that physics laws don"t apply) that created the universe. 3 pillars of proof: recession of stars/galaxies, characteristics of cosmic microwave background radiation, abundance of light elements. Hubble: demonstrated that there were many galaxies, universe expanding, showed how to measure distances in space. Doppler effect: the apparent change in sound of an object moving towards/away from you. Light blueshift: if light source is moving towards the observer, wavelength shortens. Light redshift: if light source is moving away from observer, wavelength lengthens. Amount of redshift is the measure of distance b/w star or galaxy from earth. Hubble law: v = hod v is speed (km/h); d is distance (parsecs); ho = hubble constant. Cmb: the hot light photons from the big bang that lost energy and dropped from the visible light energy to microwave energy.
