Exam 1- Binghamton University ASTR 114 | Latest2023

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Where on Earth would you be if Polaris (The North Star) was at your zenith? A) North Pole B) Tropic of Cancer C) Arctic Circle D) Equator E) It lies overhead everywhere on Earth. 1) 2) What problem does reflecting telescope adaptive optics correct? A) The light pollution of urban areas B) Defects in the optics of the telescope, such as the original Hubble mirror C) Turbulence in the Earth's atmosphere which creates twinkling 2) 3) How did the Ptolemaic model explain the apparent retrograde motion of the planets? A) It placed the Sun at the center so that the planets' apparent retrograde motion was seen as Earth passed each one in its orbit. B) It held that the planets moved along small circles that moved on larger circles around the Sun. C) It held that sometimes the planets moved backward along their circular orbits. D) It varied the motion of the celestial sphere so that it sometimes moved backward. E) It held that the planets moved along small circles that moved on larger circles around Earth. 3) 4) You could more easily resolve a close double star with a blue telescope filter than with a red one. A) True B) False 4) 5) Betelgeuse is the bright red star representing the left shoulder of the constellation Orion. All the following statements about Betelgeuse are true. Which one can you infer from its red color? A) It is moving away from us. B) It is much brighter than the Sun. C) It is much more massive than the Sun. D) The peak intensity of radiation is likely in the IR range. 5) 6) Suppose Earth's axis had a greater tilt (more than 23.5 degrees). Which of the following statements would not be true? A) Seasonal temperature variations would be more extreme than they are with the current tilt. B) We would have more daylight in summer and less daylight in winter than we do with the current tilt. C) The North celestial pole would still be occupied by the star Polaris. 6) 7) Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy 2. In this case, A) Galaxy 2 must be twice as old as Galaxy 1. B) we are seeing Galaxy 1 as it looked at a later time in the history of the universe than Galaxy 2. C) Galaxy 1 must be twice as big as Galaxy 2. D) we are seeing Galaxy 1 as it looked at an earlier time in the history of the universe than Galaxy 2. 7) 8) Lines of a particular element appear at the same wavelength in both emission and absorption line spectra. A) True B) False 8) 9) The visible color of electromagnetic radiation that has the longest wavelength is A) blue. B) or