Chapter 18 (The Outer Planets) Quiz

Chapter 18 (The Outer Planets) Quiz - Astronomy 101:...

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Astronomy 101: Chapter 18: The Outer Planets, Ver. A 1. What evidence indicates that the rings of Uranus have little dust, and the rings of Neptune contain a lot of dust? a. The camera lens of Voyager 2 was dust-free until it passed through the rings of Neptune. b. The rings of Uranus appear bright in forward-scattered light, and the rings of Neptune appear dark in forward-scattered light. c. The rings of Uranus appear dark in forward-scattered light, and the rings of Neptune appear bright in forward-scattered light. d. The rings of Uranus appear bright in back-scattered light, and the rings of Neptune appear dark in back-scattered light. e. The rings of Uranus appear dark in back-scattered light, and the rings of Neptune appear bright in back-scattered light. 2. The two requirements for a strong planetary magnetic field are rapid rotation and a fluid interior zone composed of an electrically conductive material. Jupiter's rotational period is slightly less than 10 hours. What type of matter fulfills the second requirement? a. Liquid molecular hydrogen. b. Molten copper-aluminum. c. Liquid metallic hydrogen. d. A salty subsurface ocean. e. Molten iron-nickel. 3. What evidence do we have that Jupiter has a very hot interior? a. It reflects most of the sunlight that it receives. b. It absorbs most of the sunlight that it receives. c. It emits more energy than it receives from the sun. d. Both a and b above. e. All of the above. 4. What creates the gaps in Saturn's rings? a. The gravitational interaction between ring particles. b. The gravitational influence of Saturn's moons on the ring particles. c. The gravitational interactions between Saturn and the ring particles. d. Both a and b above. e. All of the above. 1
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5. The density of Callisto is 1.8 grams per cubic centimeter, and that of Ganymede is 1.9 grams per cubic centimeter. What does this suggest about these outer two of Jupiter's four big moons? a.
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This note was uploaded on 11/08/2011 for the course AS 101 taught by Professor Biegel during the Fall '11 term at Montgomery College.

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Chapter 18 (The Outer Planets) Quiz - Astronomy 101:...

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