1. Universe Tenth Edition Chapter 13 Jupiter and Saturn’s Satellites of Fire and Ice Roger Freedman Robert Geller William Kaufmann III i  clicker Questions

2. The four largest satellites of Jupiter were first seen through a telescope by A.the ancient Greeks. B.Galileo Galilei. C.Isaac Newton. D.William Herschel. E.modern day astronomers in the twentieth century. Q13.1

3. The four largest satellites of Jupiter were first seen through a telescope by A.the ancient Greeks. B.Galileo Galilei. C.Isaac Newton. D.William Herschel. E.modern day astronomers in the twentieth century. A13.1

4. Jupiter ’ s Galilean satellites Ganymede and Callisto both have densities between 1000 and 2000 kg/m 3. This indicates that they are composed primarily of A.metals. B.silicates (rocks). C.ices. D.silicates (rocks) and ices. E.metals and silicates. Q13.2

5. Jupiter ’ s Galilean satellites Ganymede and Callisto both have densities between 1000 and 2000 kg/m 3. This indicates that they are composed primarily of A.metals. B.silicates (rocks). C.ices. D.silicates (rocks) and ices. E.metals and silicates. A13.2

6. The Galilean satellites of Jupiter A.formed at the same time as Jupiter from the so- called Jovian nebula. B.are captured asteroids. C.were formed when a large body collided with Jupiter ejecting its outer layers into space. D.are captured comets. E.were formed when several asteroids collided. Q13.3

7. The Galilean satellites of Jupiter A.formed at the same time as Jupiter from the so- called Jovian nebula. B.are captured asteroids. C.were formed when a large body collided with Jupiter ejecting its outer layers into space. D.are captured comets. E.were formed when several asteroids collided. A13.3

8. When Voyager 1 flew past Io, the large satellite of Jupiter, it sent back pictures that showed A.a very active surface that was devoid of craters. B.a heavily cratered surface. C.a featureless globe because of the opaqueness of the thick atmosphere of Io. D.erupting volcanoes. E.an icy surface. Q13.4

9. When Voyager 1 flew past Io, the large satellite of Jupiter, it sent back pictures that showed A.a very active surface that was devoid of craters. B.a heavily cratered surface. C.a featureless globe because of the opaqueness of the thick atmosphere of Io. D.erupting volcanoes. E.an icy surface. A13.4

10. The heating of the Galilean satellites of Jupiter leads to geologically active surfaces. Which one of the following best explains the source of heat? A.As a satellite rotates on its axis, it “ flexes ” due to the nearby tidal forces of Jupiter. The friction that accompanies the flexing creates heat. B.As the satellite changes its distance from Jupiter in its elliptical orbit, it “ flexes ” due to the tidal forces of Jupiter. The friction that accompanies the flexing creates heat. C.Jupiter ’ s intense magnetic field heats up the conducting core of the satellite. D.The heat is left over from the formation of the satellites. E.Interactions with the solar wind cause the heat. Q13.5

11. The heating of the Galilean satellites of Jupiter leads to geologically active surfaces. Which one of the following best explains the source of heat? A.As a satellite rotates on its axis, it “ flexes ” due to the nearby tidal forces of Jupiter. The friction that accompanies the flexing creates heat. B.As the satellite changes its distance from Jupiter in its elliptical orbit, it “ flexes ” due to the tidal forces of Jupiter. The friction that accompanies the flexing creates heat. C.Jupiter ’ s intense magnetic field heats up the conducting core of the satellite. D.The heat is left over from the formation of the satellites. E.Interactions with the solar wind cause the heat. A13.5

12. Io has active volcanoes that constantly replenish its surface. The source of energy for these volcanoes is A.tidal heating due to Jupiter. B.heat from the Sun. C.heat within Io left over from its formation. D.radioactive decay of elements, which keeps Io hot. E.Jupiter ’ s magnetic field. Q13.6

13. Io has active volcanoes that constantly replenish its surface. The source of energy for these volcanoes is A.tidal heating due to Jupiter. B.heat from the Sun. C.heat within Io left over from its formation. D.radioactive decay of elements, which keeps Io hot. E.Jupiter ’ s magnetic field. A13.6

14. Europa shows no signs of cratering because A.Jupiter ’ s gravity deflects asteroids away from it. B.Europa is tidally heated, producing a partial melting of ices within. This liquid then rises to the surface and freezes, erasing any craters. C.it is a small moon and therefore few meteors impact it. D.Europa has heat left over from its formation so that water within it is liquid. This liquid then rises to the surface and freezes, erasing any craters. E.lava flows have covered any craters that formed. Q13.7

15. Europa shows no signs of cratering because A.Jupiter ’ s gravity deflects asteroids away from it. B.Europa is tidally heated, producing a partial melting of ices within. This liquid then rises to the surface and freezes, erasing any craters. C.it is a small moon and therefore few meteors impact it. D.Europa has heat left over from its formation so that water within it is liquid. This liquid then rises to the surface and freezes, erasing any craters. E.lava flows have covered any craters that formed. A13.7

16. The Galileo spacecraft measured a magnetic field associated with Europa when Europa moved through Jupiter ’ s magnetic field. A likely reason for this is that part of the interior of Europa consists of A.liquid metal. B.solid iron. C.liquid water. D.liquid-conducting hydrogen. E.ice. Q13.8

17. The Galileo spacecraft measured a magnetic field associated with Europa when Europa moved through Jupiter ’ s magnetic field. A likely reason for this is that part of the interior of Europa consists of A.liquid metal. B.solid iron. C.liquid water. D.liquid-conducting hydrogen. E.ice. A13.8

18. Where on Jupiter's satellite Europa is liquid water thought to exist? A.In pools at various locations all over Europa's surface B.In pools on Europa's surface, but only near the equator C.In pools on Europa's surface, but only near the poles D.Beneath Europa's surface E.More than one of the above Q13.9

19. Where on Jupiter's satellite Europa is liquid water thought to exist? A.In pools at various locations all over Europa's surface B.In pools on Europa's surface, but only near the equator C.In pools on Europa's surface, but only near the poles D.Beneath Europa's surface E.More than one of the above A13.9

20. When Voyager 1 flew past Titan, the large satellite of Saturn, it sent back pictures that showed A.a very active surface that was devoid of craters. B.a heavily cratered surface. C.a featureless globe because of the opaqueness of the thick atmosphere of Titan. D.erupting volcanoes. E.an icy surface. Q13.10

21. When Voyager 1 flew past Titan, the large satellite of Saturn, it sent back pictures that showed A.a very active surface that was devoid of craters. B.a heavily cratered surface. C.a featureless globe because of the opaqueness of the thick atmosphere of Titan. D.erupting volcanoes. E.an icy surface. A13.10

22. Enceladus, a smaller satellite of Saturn, is unusual in that A.its partially cratered surface suggests that it may be active. B.it underwent a large crater impact which probably came close to breaking the satellite into pieces. C.it has active volcanoes. D.it has a strong magnetic field. E.it has nitrogen geysers. Q13.11

23. Enceladus, a smaller satellite of Saturn, is unusual in that A.its partially cratered surface suggests that it may be active. B.it underwent a large crater impact which probably came close to breaking the satellite into pieces. C.it has active volcanoes. D.it has a strong magnetic field. E.it has nitrogen geysers. A13.11

24. The large satellite of Saturn, Titan, has an atmosphere. Which of the following best describes this atmosphere? A.Denser than the Earth ’ s atmosphere, consists mostly of nitrogen with a small amount of methane B.Less dense than the Earth ’ s atmosphere, consists mostly of nitrogen with a small amount of methane C.Denser than the Earth ’ s atmosphere, consists mostly of carbon dioxide with a small amount of methane D.Less dense than the Earth ’ s atmosphere, consists mostly of carbon dioxide with a small amount of methane Q13.12

25. The large satellite of Saturn, Titan, has an atmosphere. Which of the following best describes this atmosphere? A.Denser than the Earth ’ s atmosphere, consists mostly of nitrogen with a small amount of methane B.Less dense than the Earth ’ s atmosphere, consists mostly of nitrogen with a small amount of methane C.Denser than the Earth ’ s atmosphere, consists mostly of carbon dioxide with a small amount of methane D.Less dense than the Earth ’ s atmosphere, consists mostly of carbon dioxide with a small amount of methane A13.12

26. Jupiter ’ s satellite Ganymede has no atmosphere, whereas Saturn ’ s satellite Titan has a significant atmosphere. This is because A.Ganymede is much smaller than Titan and thus cannot retain an atmosphere. B.Ganymede is closer to the Sun and warmer than Titan, so any atmosphere would escape into space. C.Ganymede is inactive, whereas Titan is active with volcanoes continually replenishing its atmosphere. D.Titan is close enough to Saturn that gases leak from this planet onto it. Ganymede is too far from Jupiter for this to happen. Q13.13

27. Jupiter ’ s satellite Ganymede has no atmosphere, whereas Saturn ’ s satellite Titan has a significant atmosphere. This is because A.Ganymede is much smaller than Titan and thus cannot retain an atmosphere. B.Ganymede is closer to the Sun and warmer than Titan, so any atmosphere would escape into space. C.Ganymede is inactive, whereas Titan is active with volcanoes continually replenishing its atmosphere. D.Titan is close enough to Saturn that gases leak from this planet onto it. Ganymede is too far from Jupiter for this to happen. A13.13