1. Uranus axial tilt is ____________ degrees. 25.6 42 26.5 98

2. Uranus was found by ______________. Johannes Kepler John Herschel Sir William Herschel Catherine Herschel

3. Who suggested the name Uranus for the newly discovered planet? King George William Herschel Johann Bode John Herschel

4. How many Earth years does it take Uranus to go once around the Sun? 84 16 48 132

5. How many spacecraft flew by Uranus by the year 2000? None One Two Three

6. What is the diameter of Uranus? 40,000 kilometers 51,000 kilometers 88,000 kilometers 15,000 kilometers

7. At its closest approach, Voyager 2 came within 81,500 kilometers of Uranus's cloudtops on Jan. 24, 1986 at 12:59 p.m. EST. True False

8. The atmosphere of Uranus is mostly _______________. Hydrogen and Helium Hydrogen and methane Helium and methane Hydrogen and carbon

9. Does Uranus have rings? Yes No

10. The Voyager 2 spacecraft was first to discover the rings of Uranus. True False

11. How many of Uranus' satellites were know before the Voyager 2 flyby? Eight Four Nine Five

12. What color does Uranus appear to be in a small telescope? Red White Blue Yellow

13. Since Uranus was not known to the ancients, is it visible to the naked eye? Yes No

14. What is the largest satellite of Uranus. Titania Ariel Oberon Miranda

15. How many additional satellites did Voyager 2 find? Eight None Twenty four Ten

16. Which satellite of Uranus reflects the most sunlight? Miranda Ariel Oberon Umbriel

17. What is the correct order of the largest five satellites proceeding outward from Uranus? Oberon, Titania, Umbriel, Ariel and Miranda Ariel, Umbriel, Miranda, Titania and Oberon Miranda, Ariel, Umbriel, Titania and Oberon Miranda, Titania, Oberon, Ariel and Umbriel

18. Voyager 1 flew by Uranus in 1986. True False

19. What two satellites of Uranus did William Herschel discover? Titania and Miranda Titania and Oberon Umbriel and Oberon Ariel and Oberon

20. In what year did William Herschel discover these two satellites? 1801 1777 1787 1781