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Unformatted text preview: c) Revolution. d) Libration. ________ 6. A _________ eclipse occurs when the Moon’s shadow falls on the Earth. This occurs during _________ moon. a) Lunar; full. b) Lunar; new. c) Solar; full. d) Solar; new. ________ 7. The average distance between the Earth and the Sun is called a) An angstrom b) A kilometer c) An astronomical unit (AU) d) A parsec. e) A light year. ________ 8. Civil time is based upon the sidereal day. a) True. b) False. ________ 9. Which of the following planets does not undergo retrograde motion (as seen from the Earth)? a) Venus. b) Mars. c) Jupiter. d) Saturn e) All planets undergo retrograde motion. ________ 10. The vernal equinox is also known as the first day of ____. a) Spring. b) Summer. c) Fall. d) Winter...
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- Spring '08
- Astronomy, Astronomical unit, retrograde motion, differential gravitational pull