Practice Exam 2 Fall

Practice Exam 2 Fall - AST101 Section M001 Our Corner of the Universe Exam 2 Test Form A Answer all of the following questions on the bubble sheet

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AST101 Section M001: Our Corner of the Universe Exam 2: October 14, 2010 Test Form A Answer all of the following questions on the bubble sheet provided using a #2 pencil. Make sure that your Name, Student ID Number and test form letter are on the answer sheet and that all answers are recorded in the correct position. ALWAYS SELECT THE BEST ANSWER. Each question is worth 1 point. This is a closed-book, closed-note exam and you have the duration of class to complete it. If you have questions, please raise your hand. You are not to talk to or attempt to obtain answers from other students for any reason. Be sure to bubble in your ID number and test form letter. DO NOT START THE EXAM UNTIL YOU ARE TOLD TO DO SO! 1
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Exam 2 Form A AST101.M001 Fall 2010 2 Choose the best answer from those provided. All questions are worth 1 point. 1. All of the following are steps in the scientific method except: (a) making observations. (b) proposing a model. (c) performing an experiment. (d) revising a model. (e) proving a model. 2. How many of the orbits shown below are physically realistic? (a) One (b) Two (c) Three (d) Four (e) Five Exam continues on next page
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Exam 2 Form A AST101.M001 Fall 2010 3 Use the drawing below to answer the next two questions. The planets in the orbits shown obey Kepler’s laws. A B C 3. Which of the planets orbits is most like the Earth’s orbit around the Sun? 4. Which of the planets shown would experience the greatest change in speed over the course of an orbit? 5. Kepler’s third law states that the relationship between the orbital period and semi-major axis of a planet’s orbit is P 2 = a 3 . To use this equation for planets orbiting the Sun, P must be expressed in and a must be expressed in . (a) perihelions; aphelions. (b) days; kilometers. (c) years; kilometers. (d) days; astronomical units. (e) years; astronomical units. The table below shows the orbital distances, orbital periods, and masses for the six planets closest to the Sun. Jupiter is the most massive of these planets at 318 times the mass of the Earth and Mercury is the least massive of these planets at 0.06 times the mass of the Earth. Planet Semi-major axis in A.U. Orbital Period in years Mass of Planet in units of the Earth’s mass Mercury 0.38 0.24 0.06 Venus 0.72 0.61 0.81 Earth 1.0 1.0 1.0 Mars 1.52 1.88 0.11 Jupiter 5.20 11.86 318 Saturn 9.54 29.46 95.2 6. The asteroid 243 Ida has an orbital period of P = 4.84 years. Using the data from the table above, the asteroid 243 Ida has a semi-major axis of (a) 0.74 A.U. (b) 1.05 A.U. (c) 1.41 A.U. (d) 2.86 A.U. (e) 13.7 A.U. Exam continues on next page
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Exam 2 Form A AST101.M001 Fall 2010 4 7. Using the information in the table above, which of the answers below best describes how a planet’s mass will affect its orbital period? (a) Planets that have small masses have longer orbital periods than planets with large
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This note was uploaded on 01/11/2012 for the course AST 101 taught by Professor Rosenzweig during the Fall '08 term at Syracuse.

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Practice Exam 2 Fall - AST101 Section M001 Our Corner of the Universe Exam 2 Test Form A Answer all of the following questions on the bubble sheet

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