mt1a - AST10G Midterm Exam 1 Version A DO NOT OPEN THE EXAM...

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Unformatted text preview: AST10G Midterm Exam 1 Version A DO NOT OPEN THE EXAM UNTIL INSTRUCTED. Write your name, Student ID, and Exam Version on your Scantron and on this cover sheet. For short-answer questions, write your answers on the first few (blank) sheets of the exam. For multiple-choice, enter the best answer on the scantron (also circle the answer on the exam if you want to make your corrections easier). Turn in your scantron and short- answer pages at the end of the exam. Tear off the questions and take them home. After the exam: You may research and submit corrections to your answers as described in the email. For multiple-choice questions that you think you got wrong, write (directly on the question sheet) the correct letter answer and a 1-2 sentence explanation of WHY it is the correct answer. For short-answer questions, write a complete explanation. Turn it in to my mailbox on the second floor of the Physics building by 5pm on Monday (no extensions). You will receive half credit if your explanation convinces me that you now understand the correct answer. During the exam: If you find any multiple-choice question ambiguous or poorly worded, use the end of the short-answer area to indicate the question number, the answer you entered on the scantron, and why it was ambiguous. If you convince me you know what you are talking about, you will get credit regardless of the scantron answer. Please exercise this option only for truly ambiguous questions. Do not forget to write your name on the scantron AND on the cover page with the short answers. If you turn in corrections, do not forget to write your name on the work you turn in. Good luck! 1 This page and the next two have space for short answers. The questions are at the end of the multiple- choice questions. 2 More space for short answers. 3 More space for short answers. 4 Multiple-choice questions: 1 point each. 1. If we represented the history of the universe on a one-year calendar, about when did human civilization appear? a. Dec. 15 b. Dec 30 c. Dec 31, noon d. Dec 31, 11pm e. Dec 31, 11:59:30pm 2. One consequence of light taking nonzero time to travel to us is a. Two astronomers can see a star differently depending on their location on Earth b. The light is redshifted c. The light gets fainter d. Our clocks run slower e. We see distant galaxies as they were in the past 3. Which of the following moves the slowest? a. radio waves b. infrared light c. visible light d. x-rays e. They all move at the same speed....
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mt1a - AST10G Midterm Exam 1 Version A DO NOT OPEN THE EXAM...

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