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answer questions 1-3 HOMEWORK XXVII (due start of class October 29)...

answer questions 1-3

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HOMEWORK XXVII (due start of class October 29) (copyright D. McCarthy) GOALS for this assignment: This essay is meant to help you review the basic patterns and properties that characterize our Solar System and evaluate the “solar nebula” hypothesis that explains how those characteristics developed during the formation of the Solar System. TO RECEIVE FULL CREDIT, you must follow all these instructions carefully. 1. Write your star name at the top of your homework. 2. Staple multiple pages; otherwise you will lose 5 points! 3. Follow the “Daily Skills” #1-30 in both communication and numbers. 4. All sentence responses must be typewritten and in complete sentences . You may handwrite any arithmetic. Use good English grammar. 5. If you work more than two hours on this assignment, you should stop, record your work here, and contact Dr. McCarthy or Ms. Schneider for help. Section A. Study this week’s Daily Skills #28-30 in both communication and numbers. Be sure to review all the previous Daily Skills and keep using them in all your written work. Section B. Your Essay About the Formation of our Solar System Review all the required reading about our Solar System from previous weeks and the related assignments in Mastering Astronomy . 1. Using your own words, write at least a 300-word essay describing the essential concepts of the solar nebula theory and explaining how this theory reproduces the basic properties of our Solar System, including those characteristics listed below. a. The densities of the planets decrease with increasing distance from the Sun, such that the terrestrial and jovian planets have very different densities. b. The planets have nearly circular orbits in the ecliptic plane. c. The planets, and their moons, generally rotate and revolve in the same direction as the Sun rotates. d. The moons of the jovian planets have formed miniature Solar Systems around those planets, exhibiting similar patterns to items a,b,c above. e. The ages of the oldest rocks on Earth, Moon, and meteorites are ~4.6 Gyrs. 2. There are some exceptions to the patterns mentioned above. For example, the rotation axes of some planets have unusually high tilt angles and some orbits are more eccentric. Discuss some specific exceptions and show how these exceptions could be explained within the context of the solar nebula theory. 3. Wherever possible mention specific objects and features of the Solar System and strengthen your explanation with numbers. Use paragraphs to organize your essay and be sure to adhere to the Daily Skills in your writing. Give your essay a creative title.
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