The Universe

Student's Name: Paul Blanton The Universe Summary : 100% 5 correct out of the 5 marked for grading 1. What is the composition of the Sun's surface? Your Answer: 94% hydrogen, 5.9% helium, .1% other The Sun's surface is called the photosphere and it is made up (by number of atoms) of about 94.0% hydrogen and 5.9% helium, with only traces of the heavier elements making up the other 0.1% 2. State the two primary motions that the Sun is undergoing. Your Answer: It rotates on its …

…the low-frequency (red) end of the electromagnetic spectrum. It is believed that this shift in spectrum lines is the result of the overall expansion of the universe. This redshift along with the discovery of the 3-K cosmic background radiation and the observed mass ratio of hydrogen to helium throughout the universe all point to a model in which the universe was created in a gigantic explosion, the Big Bang, and we now see the entire