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This review covers essential questions about planetary motion and key contributions by Galileo, including retrograde motion, the orbital period of Mercury, epicycles, and Jupiter's position in the night sky. It assesses understanding of historical astronomy, the heliocentric model, and notable discoveries attributed to Galileo. The questions are designed to reinforce knowledge of celestial mechanics and famous figures in the history of astronomy, making it a valuable resource for students studying planetary motion.
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PM: Planetary Motion(up through Galileo) Review Questions Sept 15, 2010
2 Question 1 Retrograde motion of planets was first described by? • (a) Greeks • (b) Romans • (c) Babylonians • (d) Chinese • (e) People who built Stonehenge
3 Question 2 It takes Mercury ____ days to go around the sun. From superior conjunction to next superior conjunction is ___ days • (a) 116, 88 • (b) 88, 116 • (c) 88, 88 • (d) 116, 116 • (e) 88, 365.25
4 Question 3 An epicycle revolves around a larger circle called _______ • (a) eccentric • (b) hippopede • (c) apex • (d) cycloid • (e) deferent
5 Question 4 Which constellation would Jupiter NEVER be found in? • (a) Taurus • (b) Scorpio • (c) Aquarius • (d) Orion • (e) Leo
6 Question 5 Something Galileo did NOT do (discover) • (a) sunspots • (b) Venus has phases • (c) mountains on the moon • (d) Jupiter has moons • (e) invented the first telescope • (e) he did all of these!
7 Question 6 Which observation of Galileo is best to argue for the heliocentric system? • (a) Mountains on Moon • (b) Sunspots show sun rotates • (c) Phases of Venus • (d) Moons of Jupiter • (e) All bodies fall at same rate