Physics > QUESTIONS & ANSWERS > PHYS 1403 Lab: CENTER OF THE GALAXY Worksheet SOLUTIONS (All)

PHYS 1403 Lab: CENTER OF THE GALAXY Worksheet SOLUTIONS

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PHYS 1403 Lab: CENTER OF THE GALAXY Worksheet Enter your answers to each question in the data tables and yellow highlighted areas below. When completed, please save and upload this file to this ass... ignment in Canvas. PRELAB QUESTIONS 1. What is meant by a “geocentric” model? Earth-centered – the Earth is at the center of the solar system / universe. 2. What is meant by a “heliocentric” model? Sun-centered – the Sun is at the center of the solar system / universe 3. What were the main arguments made (by Aristotle) against the heliocentric model? The motion of the Earth implied by a heliocentric model is undetectable by 1) parallax of stars (It is, just not with the tools Aristotle had) 2) physical perceptions (Behavior of physics on Earth to is not quite, but nearly indistinguishable from that of physics in an inertial reference frame – Foucalt’s pendulum) 3) wind of passage (We are buffered by our atmosphere and the fact that the space outside our atmosphere is extremely rarified.) 4) objects such as birds and clouds (The atmosphere, and objects in it move with the surface of the Earth because of inertia.) 4. What is the difference between the “Galaxy” and the “Universe”? The galaxy is a collection of the billions of stars nearest to us which share a common center of mass and orbit. It is one of billions of galaxies in the universe. 5. How will we determine the location of the center of our galaxy in today’s lab? We will plot the positions of several globular clusters and find their center [Show More]

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