Astronomy 101 Review Exam 2

Astronomy 101 Review Exam 2 - Astronomy 101 Review Things...

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Things you might want to remember Astronomy 101 Review
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2nd Exam astronomy 101 Monday October 10th 4:00 PM to 5:30 PM Do not come to Regener Hall 103 Log on to Mastering Astronomy Use a computer with a good internet connection 50 Questions each worth 2 points
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Escape velocity What is the escape velocity for a planet that has a mass of 6x1024 kg and a radius of 6.4x103 km? A. 1 m/s B. 11 m/s C. 110 m/s D. 1100 m/s E. 11,000 m/s
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E. 11,000 m/s (the planet is Earth)
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Density Density is defined as A. Weight per square inch B. Weight divided by the planet’s radius C. Mass per unit volume D. Mass times weight
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D. Mass per unit volume Mass is given in mass / volume Example: Earth’s density is 5500 kg / m3 Example: Water is 1000 kg / m3 (at 5 degrees C)
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Planetary orbits Earth’s orbit is A. Highly inclined to the ecliptic B. Almost circular, with low eccentricity C. Has the Sun at the exact center D. Changing with the seasons E. Smaller than Mercury’s
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B. Almost circular with low eccentricity
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Astronomy 101 Review Exam 2 - Astronomy 101 Review Things...

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