exam1t - Section 1 Astronomy 150 Midterm Test Form A Fall...

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Section 1 Astronomy 150 Fall 2009 Midterm Test Form A 1. DO NOT OPEN THIS EXAM UNTIL INSTRUCTED TO DO SO. 2. Write the multiple-choice answers on your Scantron form. 3. Make sure to mark your test form, name, and NetID on your form. I do not need your social security number. 4. Answer ALL of the questions. There is no penalty for guessing. 5. Don't get stalled on any one question. 6. Choose the best answer for each problem.
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Version A Astro 150: Exam 1 Version A Page 2 1. This object did not impact the ground, instead exploding around 8km off the ground. Nonetheless, it caused extensive damage, knocking down 2000 km 2 of trees. Luckily it impacted a sparsely inhabited region in Siberia. What do we call this incident? A) Apophis B) Manicouagan C) Chicxulub D) Shoemaker-Levy 9 E) Tunguska 2. What type of crater has a central uplift in the center of the crater? A) round crater B) lunar crater C) simple crater D) complex crater E) elliptical crater 3. How do we know that meteorites are 4.6 billion years old? A) By using the formation of the Solar System as a guide. B) By Carbon-14 dating. C) By measuring the amount of a long-lived radioactive parent and its daughter species. D) By guessing. E) By their oxygen isotope ratios. 4. Why does a meteor glow? A) fission B) ram pressure C) neon D) friction E) fusion 5. Which of the following is NOT a consequence of a large impact? A) Devastating Earthquakes. B) For oceanic impacts, global tsunamis. C) Global winter and global darkness. D) The Moon’s orbit will be dragged Earthward. E) For a terrestrial impact, rock will be vaporized and thrown into the stratosphere. 6. Why can asteroids cause so much damage? Hint, which property is the most important. A) Their impact angle, straight down. B) Their material. C) Their velocity. D) Their mass. E) Their color.
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Version A Astro 150: Exam 1 Version A Page 3 7. If you see a small meteorite hit the ground and rush to touch it, it will feel A) sharp. B) very hot, likely burning you if it is any size. C) like nothing you have ever felt before. D) very hot, likely burning you if it is the size of a golf ball or bigger. E) cool or at ambient temperature. 8. Why is Pluto no longer a planet? A) Its rotational energy decreased, which pushed it out of planetary orbits. B) The definition of planet was modified. C) It just plain ran out of luck. D) With higher resolution, we found out that Pluto is not a planet.
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exam1t - Section 1 Astronomy 150 Midterm Test Form A Fall...

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