Astronomy A BEGINNERS GUIDE TO THE UNIVERSE EIGHTH

Astronomy A BEGINNER’S GUIDE TO THE UNIVERSE EIGHTH EDITION CHAPTER 7 The Jovian Planets Clickers © 2017 Pearson Education, Inc.

Question 1 Both Jupiter and Saturn a) have liquid metallic hydrogen in their interiors. b) have rings. c) emit more energy than they absorb from the Sun. d) rotate very rapidly. e) All of the above. © 2017 Pearson Education, Inc.

Question 1 Both Jupiter and Saturn a) have liquid metallic hydrogen in their interiors. b) have rings. c) emit more energy than they absorb from the Sun. d) rotate very rapidly. e) All of the above. © 2017 Pearson Education, Inc.

Question 2 Jovian planets share all of the following traits EXCEPT a) b) c) d) e) a low-density gaseous core. large magnetic fields. a lot of hydrogen and helium gas. many moons. differential rotation. © 2017 Pearson Education, Inc.

Question 2 Jovian planets share all of the following traits EXCEPT a) b) c) d) e) a low-density gaseous core. large magnetic fields. a lot of hydrogen and helium gas. many moons. differential rotation. Explanation: All of the jovian planets have dense, compact cores more massive than Earth, which are surrounded by liquid and gaseous layers. © 2017 Pearson Education, Inc.

Question 3 Jupiter and the other jovian planets are noticeably oblate because they have a) very strong magnetic fields. b) powerful gravity pulling on the poles. c) rapid rotation and a fluid interior. d) many moons that tidally distort their shapes. e) all of the above. © 2017 Pearson Education, Inc.

Question 3 Jupiter and the other jovian planets are noticeably oblate because they have a) very strong magnetic fields. b) powerful gravity pulling on the poles. c) rapid rotation and a fluid interior. d) many moons that tidally distort their shapes. e) all of the above. Explanation: All of the jovian planets are larger than Earth, all spin faster, all have lower density, and all show a flattened, oblate shape. © 2017 Pearson Education, Inc.

Question 4 What is the probable source of the variations in Jupiter’s belts and zones? a) Convection of ammonia ice upward b) Differential rotation and underlying zonal flow c) Oblateness due to low density d) Thermonuclear fusion e) Jupiter’s huge magnetosphere © 2017 Pearson Education, Inc.

Question 4 What is the probable source of the variations in Jupiter’s belts and zones? a) Convection of ammonia ice upward b) Differential rotation and underlying zonal flow c) Oblateness due to low density d) Thermonuclear fusion e) Jupiter’s huge magnetosphere © 2017 Pearson Education, Inc.

Question 5 What is the source of Jupiter’s strong magnetic field? a) Charged particles moving in the atmosphere b) Thermonuclear fusion in Jupiter’s core c) The gravitational attraction of Jupiter’s many large moons d) The Great Red Spot e) Metallic hydrogen swirling in its interior © 2017 Pearson Education, Inc.

Question 5 What is the source of Jupiter’s strong magnetic field? a) Charged particles moving in the atmosphere b) Thermonuclear fusion in Jupiter’s core c) The gravitational attraction of Jupiter’s many large moons d) The Great Red Spot e) Metallic hydrogen swirling in its interior © 2017 Pearson Education, Inc.

Question 6 Saturn radiates even more excess energy than Jupiter because a) Saturn is still radiating heat left over from its formation. b) Saturn’s thick cloud layer contributes to a larger greenhouse effect. c) helium rain gives off heat as it falls toward Saturn’s center. d) Saturn’s atmosphere contains methane. e) Saturn can fuse hydrogen into helium in its core, like the Sun. © 2017 Pearson Education, Inc.

Question 6 Saturn radiates even more excess energy than Jupiter because a) Saturn is still radiating heat left over from its formation. b) Saturn’s thick cloud layer contributes to a larger greenhouse effect. c) helium rain gives off heat as it falls toward Saturn’s center. d) Saturn’s atmosphere contains methane. e) Saturn can fuse hydrogen into helium in its core, like the Sun. Explanation: Jupiter and Neptune also radiate excess heat, most likely left over from their formation. © 2017 Pearson Education, Inc.

Question 7 The two outer jovian planets appear bluish in color because a) gaseous ammonia in their atmospheres absorbs blue light. b) methane absorbs red light. c) cold hydrogen reflects blue light. d) dust in their atmospheres scatters blue light, as it does on Earth. © 2017 Pearson Education, Inc.

Question 7 The two outer jovian planets appear bluish in color because a) gaseous ammonia in their atmospheres absorbs blue light. b) methane absorbs red light. c) cold hydrogen reflects blue light. d) dust in their atmospheres scatters blue light, as it does on Earth. © 2017 Pearson Education, Inc.

Question 8 Which of these is true about the seasons on Uranus? a) Its strange tilt produces extreme seasonal variations. b) With its tilt of 29º, Uranus has four seasons similar to those on Earth. c) It never shows any weather in its bland clouds. d) It spins so fast all seasons are the same. © 2017 Pearson Education, Inc.

Question 8 Which of these is true about the seasons on Uranus? a) Its strange tilt produces extreme seasonal variations. b) With its tilt of 29º, Uranus has four seasons similar to those on Earth. c) It never shows any weather in its bland clouds. d) It spins so fast all seasons are the same. © 2017 Pearson Education, Inc.

Question 9 The magnetic fields of which two planets are most unusual? a) b) c) d) e) Jupiter and Neptune Jupiter and Saturn Jupiter and Earth Saturn and Earth Uranus and Neptune © 2017 Pearson Education, Inc.

Question 9 The magnetic fields of which two planets are most unusual? a) b) c) d) e) Jupiter and Neptune Jupiter and Saturn Jupiter and Earth Saturn and Earth Uranus and Neptune Explanation: Both Uranus and Neptune have fields that are off center and very inclined to their rotation axes. © 2017 Pearson Education, Inc.