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Name: ________________________ Period: ___________________ Date: __________ 1 Ch 22/23 Worksheet #1 Ch 22 - All Sections > Pages 614-634 Multiple Choice. Identify the letter of the choice that best completes the statement or answers the question. ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 1. The geocentric model of the universe stated that ____. a. Earth revolved around the celestial sphere b. the sun was the center of the universe c. Earth was a “wanderer” d. Earth was the center of the universe 2. Which ancient astronomer developed a geocentric model of the universe explaining the observable motions of the planets? a. Aristotle c. Copernicus b. Ptolemy d. Newton 3. Before the telescope was invented, people had the idea that the planets were closer to Earth than were the stars. Which piece of evidence contributed to this conclusion? a. The planets were the only objects with c. The stars were consistently brighter than visible moons. the planets. b. The Milky Way was sometimes visible d. The planets appeared to move much more during the day. quickly than the stars. 4. An object in the same part of the night sky at the same time on three different nights appears to have moved. Based on this information, the object is most likely a _____. a. star c. galaxy b. nebula d. planet 5. The first early astronomer to propose a sun-centered solar system was ____. a. Galileo c. Copernicus b. Newton d. Brahe 6. According to the third law of planetary motion, the period of revolution of a planet is related to the planet’s ____. a. distance to the sun c. gravitational attraction b. size d. orbital speed 7. The turning or spinning of a body on its axis is known as ____. a. rotation c. precession b. revolution d. apogee 8. Seasons are caused by ____. a. Earth’s rotation c. Earth’s tilted axis b. precession d. Earth’s distance from the sun 9. What occurs when the moon casts its shadow on Earth? a. lunar eclipse c. sidereal month b. solar eclipse d. synodic month 10. What is the gravitational attraction on the lunar surface compared to the Earth’s surface? a. one-sixth c. one-fifth b. 6 times more d. the same 1 1 ____ 11. Which statement best explains why the moon has more craters than Earth? a. Earth has never been struck by rapidly moving debris. b. Weathering and erosion do not occur on the moon. c. The moon is tectonically active. d. The moon has a thicker atmosphere. ____ 12. Round depressions on the moon’s surface are called ____. ** a. highlands c. craters b. maria d. meteorites ____ 13. Most natural objects that enter Earth's atmosphere do not reach the surface of the Earth because ___. a. the high temperatures of the troposphere c. he sudden occurrence of oxygen in the cause them to burn lower atmosphere allows the objects to burn b. the high gas density of the mesosphere d. the friction between the atmosphere and cause mini explosions within the objects the objects results in extreme heat and the objects burn ____ 14. What is the most widely accepted theory for the formation of the moon? a. It formed independently from the Earth c. formed from cheese b. giant impact of a Mars-sized object d. captured by Earth’s gravity when it was hitting Earth passing by ____ 15. How old is the moon? a. much older than Earth c. much younger than Earth b. about the same age as Earth d. older than the sun 2