2001 Test 2b

# 2001 Test 2b - BROCK UNIVERSITY ASTRONOMY 1F00 Test 2B,...

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BROCK UNIVERSITY ASTRONOMY 1F00 Test 2B, November 21, 2001 Instructor: B. Mitrovic 1. Kepler’s first law of planetary motion tells us that the path of each planet about the Sun is a) a circle. b) an epicycle. c) a parabola d) an ellipse. 2. The Copernican model explained retrograde motion as due to a) planets moving along epicycles. b) planets stopping their eastward motion, moving westward awhile, and then resuming their eastward motion. c) different speeds of the Earth and another planet in their orbits around the Sun. d) [None of the above.] 3. At the time of Copernicus, the fact that parallax shift of the brighter stars could NOT be seen was considered evidence for which model? a) The geocentric model. b) The heliocentric model. c) Neither model could explain the fact. 4. Kepler’s ____ law states that a line connecting the Sun and a planet sweeps out equal areas in equal time intervals. a) first b) second c) third d) fourth 5. According to Newton’s laws of motion, an object moving along a circular trajectory is NOT subject to force. a) True. b) False. 6. Galileo’s approach to the study of motion differed from the one taken by the ancient Greeks in that

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a) he claimed that the laws of motion could be obtained by purely logical reasoning without doing any experiments. b) he measured how far an object went in how long a time. c) he thought that an object moves because it is pushed by the air that fills up the space where the object was earlier. d) [Galileo never studied motion.] 7. The farther a planet is from the Sun, the ____ it moves. a) faster b) slower 8. After Tycho Brahe’s death, ______ took over his records and continued his work. a) Newton b) Galileo c) Kepler d) Bruno 9. If the distance between two bodies is halved, the force of gravity which they exert on each other is a) halved. b) doubled. c) reduced by a factor of 4. d) increased by a factor of 4. 10. Two bodies have equal mass but the radius of body A is a half of the radius of body B. Then the escape velocity from A is _______ than the escape velocity from B. a) smaller
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## This note was uploaded on 06/01/2011 for the course ECON 1P91 taught by Professor Cottrell during the Spring '08 term at Brock University, Canada.

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2001 Test 2b - BROCK UNIVERSITY ASTRONOMY 1F00 Test 2B,...

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