1. Universe Tenth Edition Chapter 3 Eclipses and the Motion of the Moon Roger Freedman Robert Geller William Kaufmann III Clicker Questions

2. The Moon rotates on its axis once A.every 28 days. B.every 27 1/3 days. C.every 29 1/2 days. D.every 31 days. E.every lunar synodic month. Q3.1

3. The Moon rotates on its axis once A.every 28 days. B.every 27 1/3 days. C.every 29 1/2 days. D.every 31 days. E.every lunar synodic month. A3.1

4. The phases of the Moon occur because A.the Earth casts a shadow on the Moon. B.the Moon casts a shadow on the Earth. C.it is possible to see only part of the illuminated side of the moon depending on its position in its orbit. D.of your location on Earth. E.people see the Moon from different places on the Earth. Q3.2

5. The phases of the Moon occur because A.the Earth casts a shadow on the Moon. B.the Moon casts a shadow on the Earth. C.it is possible to see only part of the illuminated side of the moon depending on its position in its orbit. D.of your location on Earth. E.people see the Moon from different places on the Earth. A3.2

6. Moonlight on Earth is caused by A.sunlight reflected from the Earth. B.sunlight reflected from the Moon. C.radioactivity in the lunar rocks. D.starlight reflected from the Moon. E.starlight reflected from the Earth. Q3.3

7. Moonlight on Earth is caused by A.sunlight reflected from the Earth. B.sunlight reflected from the Moon. C.radioactivity in the lunar rocks. D.starlight reflected from the Moon. E.starlight reflected from the Earth. A3.3

8. If the phase of the Moon is full on the first day of spring in the northern hemisphere, where is the Moon located on the celestial sphere (see diagram)? A.summer solstice B.winter solstice C.vernal equinox D.autumnal equinox E.the zenith Q3.4

9. If the phase of the Moon is full on the first day of spring in the northern hemisphere, where is the Moon located on the celestial sphere (see diagram)? A.summer solstice B.winter solstice C.vernal equinox D.autumnal equinox E.the zenith A3.4

10. A total solar eclipse occurs on the first day of summer in the northern hemisphere. What must be true about the Moon ’ s location on the celestial sphere on that day? A.It must be at the vernal equinox. B.It must be at the autumnal equinox. C.It must be north of the celestial equator. D.It must be south of the celestial equator. E.None of the above. Q3.5

11. A total solar eclipse occurs on the first day of summer in the northern hemisphere. What must be true about the Moon ’ s location on the celestial sphere on that day? A.It must be at the vernal equinox. B.It must be at the autumnal equinox. C.It must be north of the celestial equator. D.It must be south of the celestial equator. E.None of the above. A3.5

12. If a person close to the equator sees a first-quarter moon directly overhead, what is the local time for this person? A.6 A.M. B.12:00 noon C.6:00 P.M. D.Midnight E.10:00 P.M. Q3.6

13. If a person close to the equator sees a first-quarter moon directly overhead, what is the local time for this person? A.6 A.M. B.12:00 noon C.6:00 P.M. D.Midnight E.10:00 P.M. A3.6

14. If the orbit of the Moon was in the same plane as the ecliptic, then the number of solar eclipses per lunar month would be A.0 B.1 C.2 D.4 E.6 Q3.7

15. If the orbit of the Moon was in the same plane as the ecliptic, then the number of solar eclipses per lunar month would be A.0 B.1 C.2 D.4 E.6 A3.7

16. Solar eclipses only occur when the phase of the Moon is A.new. B.full. C.first quarter. D.last quarter. E.waxing. Q3.8

17. Solar eclipses only occur when the phase of the Moon is A.new. B.full. C.first quarter. D.last quarter. E.waxing. A3.8

18. An annular solar eclipse A.occurs once a year. B.can occur only when the Moon in its elliptical orbit is near its nearest point to the Earth. C.occurs once a month. D.can occur only when the Moon in its elliptical orbit is near its farthest point from Earth. E.occurs once each century. Q3.9

19. An annular solar eclipse A.occurs once a year. B.can occur only when the Moon in its elliptical orbit is near its nearest point to the Earth. C.occurs once a month. D.can occur only when the Moon in its elliptical orbit is near its farthest point from Earth. E.occurs once each century. A3.9

20. Why is the Moon a reddish color during a total lunar eclipse? A.Lights from cities on the Earth illuminate it. B.It is an optical illusion created by the eclipse. C.Red light passes through the Earth ’ s atmosphere and then illuminates the Moon. D.Light from Mars dimly illuminates the Moon. E.Lunar dust reflects the sunlight. Q3.10

21. Why is the Moon a reddish color during a total lunar eclipse? A.Lights from cities on the Earth illuminate it. B.It is an optical illusion created by the eclipse. C.Red light passes through the Earth ’ s atmosphere and then illuminates the Moon. D.Light from Mars dimly illuminates the Moon. E.Lunar dust reflects the sunlight. A3.10

22. If the Earth did not have an atmosphere, A.total lunar eclipses would still look the same. B.the Moon would not be visible during a total lunar eclipse. C.no lunar eclipses could occur. D.the Moon would be much brighter during a total lunar eclipse. E.the moon would be much redder during a total lunar eclipse. Q3.11

23. If the Earth did not have an atmosphere, A.total lunar eclipses would still look the same. B.the Moon would not be visible during a total lunar eclipse. C.no lunar eclipses could occur. D.the Moon would be much brighter during a total lunar eclipse. E.the moon would be much redder during a total lunar eclipse. A3.11

24. Which statement correctly describes the visibility (weather permitting) of a solar or lunar eclipse from Earth when such an eclipse occurs? A.A solar eclipse is visible from much less than 50% of the Earth ’ s surface, whereas a lunar eclipse is visible from at least 50% of the Earth ’ s surface. B.A solar eclipse is visible from at least 50% of the Earth ’ s surface, whereas a lunar eclipse is visible from much less than 50% of the Earth ’ s surface. C.Both types of eclipse are visible from at least 50% of the Earth ’ s surface. D.Both types of eclipse are visible from much less than 50% of the Earth ’ s surface. E.A solar eclipse is visible from 50% of the Earth ’ s surface, but a lunar eclipse can be seen anywhere on Earth. Q3.12

25. Which statement correctly describes the visibility (weather permitting) of a solar or lunar eclipse from Earth when such an eclipse occurs? A.A solar eclipse is visible from much less than 50% of the Earth ’ s surface, whereas a lunar eclipse is visible from at least 50% of the Earth ’ s surface. B.A solar eclipse is visible from at least 50% of the Earth ’ s surface, whereas a lunar eclipse is visible from much less than 50% of the Earth ’ s surface. C.Both types of eclipse are visible from at least 50% of the Earth ’ s surface. D.Both types of eclipse are visible from much less than 50% of the Earth ’ s surface. E.A solar eclipse is visible from 50% of the Earth ’ s surface, but a lunar eclipse can be seen anywhere on Earth. A3.12

26. In which direction does the Moon ’ s shadow move over the Earth ’ s surface during a solar eclipse? A.Westward B.Eastward C.Eastward in the northern hemisphere and westward in the southern hemisphere D.Westward in the northern hemisphere and eastward in the southern hemisphere E.Northward Q3.13

27. In which direction does the Moon ’ s shadow move over the Earth ’ s surface during a solar eclipse? A.Westward B.Eastward C.Eastward in the northern hemisphere and westward in the southern hemisphere D.Westward in the northern hemisphere and eastward in the southern hemisphere E.Northward A3.13

28. You are standing on the Moon. You see the Earth rising in the east in the phase shown in the photograph. Approximately what phase of the Moon would someone standing on the Earth see? A.New B.Full C.First quarter D.Last quarter E.Waning crescent Q3.14

29. You are standing on the Moon. You see the Earth rising in the east in the phase shown in the photograph. Approximately what phase of the Moon would someone standing on the Earth see? A.New B.Full C.First quarter D.Last quarter E.Waning crescent A3.14

30. The earliest written record that indicates the Earth is round and also gives an estimate of the diameter of the Earth comes from A.Greek astronomers in Alexandria. B.sixteenth-century astronomers. C.the builders of Stonehenge. D.Babylonian astronomers. E.Egyptian astronomers in Alexandria. Q3.15

31. The earliest written record that indicates the Earth is round and also gives an estimate of the diameter of the Earth comes from A.Greek astronomers in Alexandria. B.sixteenth-century astronomers. C.the builders of Stonehenge. D.Babylonian astronomers. E.Egyptian astronomers in Alexandria. A3.15