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Quiz about Twenty Questions About Uranus
Quiz about Twenty Questions About Uranus

Twenty Questions About Uranus Trivia Quiz


We are now really getting into the outer fringes of the Solar System. What do you know about the planet Uranus?

A multiple-choice quiz by almach. Estimated time: 5 mins.
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Author
almach
Time
5 mins
Type
Multiple Choice
Quiz #
90,847
Updated
Dec 03 21
# Qns
20
Difficulty
Tough
Avg Score
11 / 20
Plays
1975
Last 3 plays: daver852 (16/20), Guest 49 (5/20), angostura (20/20).
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Question 1 of 20
1. Uranus axial tilt is ____________ degrees. Hint


Question 2 of 20
2. Uranus was found by ______________. Hint


Question 3 of 20
3. Who suggested the name Uranus for the newly discovered planet? Hint


Question 4 of 20
4. How many Earth years does it take Uranus to go once around the Sun? Hint


Question 5 of 20
5. How many spacecraft flew by Uranus by the year 2000? Hint


Question 6 of 20
6. What is the diameter of Uranus? Hint


Question 7 of 20
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.


Question 8 of 20
8. The atmosphere of Uranus is mostly _______________. Hint


Question 9 of 20
9. Does Uranus have rings?


Question 10 of 20
10. The Voyager 2 spacecraft was first to discover the rings of Uranus.


Question 11 of 20
11. How many of Uranus' satellites were known before the Voyager 2 flyby? Hint


Question 12 of 20
12. What color does Uranus appear to be in a small telescope? Hint


Question 13 of 20
13. Since Uranus was not known to the ancients, is it visible to the naked eye?


Question 14 of 20
14. What is the largest satellite of Uranus. Hint


Question 15 of 20
15. How many additional satellites did Voyager 2 find? Hint


Question 16 of 20
16. Which satellite of Uranus reflects the most sunlight? Hint


Question 17 of 20
17. What is the correct order of the largest five satellites proceeding outward from Uranus? Hint


Question 18 of 20
18. Voyager 1 flew by Uranus in 1986.


Question 19 of 20
19. What two satellites of Uranus did William Herschel discover? Hint


Question 20 of 20
20. In what year did William Herschel discover these two satellites? Hint



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Most Recent Scores
Dec 17 2024 : daver852: 16/20
Dec 11 2024 : Guest 49: 5/20
Nov 26 2024 : angostura: 20/20
Nov 12 2024 : Guest 64: 13/20
Nov 03 2024 : Nala2: 7/20

Score Distribution

quiz
Quiz Answer Key and Fun Facts
1. Uranus axial tilt is ____________ degrees.

Answer: 98

Uranus' axis is almost parallel to the ecliptic; it has "fallen" over on its side! The equator is still hotter than the poles; the circumstances for this are unknown. There is still a debate as to which pole is the North pole and which is the South!
2. Uranus was found by ______________.

Answer: Sir William Herschel

Sir William Herschel, 1738-1822, his original name was Friedrich Wilhelm Herschel, found Uranus on March 13, 1781. Sir William Herschel also cataloged over 2500 nebulae. NOTE: A little known fact about Uranus, John Flamsteed first plotted Uranus on a star chart as early as 1690 as 34 Tauri!
3. Who suggested the name Uranus for the newly discovered planet?

Answer: Johann Bode

William Herschel wanted to name it after King George III ("georgium sidus"), others wanted to name it Herschel. Johann Bode was famous for producing some of the best star atlases of his time.
4. How many Earth years does it take Uranus to go once around the Sun?

Answer: 84

Since Uranus' discovery, it has only revolved around the Sun about 2 1/2 times!
5. How many spacecraft flew by Uranus by the year 2000?

Answer: One

Only Voyager 2 flew by Uranus on January 24, 1986.
6. What is the diameter of Uranus?

Answer: 51,000 kilometers

Almost four times the diameter of Earth. Uranus is the third largest planet.
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.

Answer: True

That would be 50,600 miles. Voyager discovered that Uranus has a large magnetic field.
8. The atmosphere of Uranus is mostly _______________.

Answer: Hydrogen and Helium

Similar to Jupiter and Saturn, 83% hydrogen, 15% helium and 2% methane.
9. Does Uranus have rings?

Answer: Yes

Uranus has 11 very dark rings. They range from 38,000 kilometers to 51,000 from the center of Uranus.
10. The Voyager 2 spacecraft was first to discover the rings of Uranus.

Answer: False

The first nine rings were discovered by an Earth-based telescope in 1977 when Uranus occulted a star. The star blinked several times before disappearing behind the planet. Voyager 2 did discover 2 additional rings in 1986 (the closest ring and the second furthest).
11. How many of Uranus' satellites were known before the Voyager 2 flyby?

Answer: Five

The five satellites are Oberon, Umbriel, Titania, Ariel and Miranda.
12. What color does Uranus appear to be in a small telescope?

Answer: Blue

Uranus' bluish color is the result of absorption of red light by methane in the atmosphere.
13. Since Uranus was not known to the ancients, is it visible to the naked eye?

Answer: Yes

Uranus is sixth magnitude and is visible in an extremely dark sky. The "average" human eye can see to about 6.3 magnitude in the blackest of skies. Uranus would be very difficult to spot, but not impossible.
14. What is the largest satellite of Uranus.

Answer: Titania

Titania (1578 km) is just slightly larger than Oberon (1522 km).
15. How many additional satellites did Voyager 2 find?

Answer: Ten

Their names are: Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda and Puck. They range from 26 km to 154 km in size.
16. Which satellite of Uranus reflects the most sunlight?

Answer: Ariel

Ariel reflects about 40 percent of the light it receives.
17. What is the correct order of the largest five satellites proceeding outward from Uranus?

Answer: Miranda, Ariel, Umbriel, Titania and Oberon

18. Voyager 1 flew by Uranus in 1986.

Answer: False

Voyager 2 is the only spacecraft to date that flew by Uranus, Voyager 1 only went to Jupiter and Saturn.
19. What two satellites of Uranus did William Herschel discover?

Answer: Titania and Oberon

Titania and Oberon in 1787. He also discovered Mimas and Enceladus, staellites of Saturn in 1789.
20. In what year did William Herschel discover these two satellites?

Answer: 1787

Titania's surface is cratered and also has many systems of interconnected valleys, probably indicating that Titania's surface hardened before the interior. When the interior froze, it expanded and cracked the surface of Titania. Oberon is heavily cratered and has probably been that way since its formation.
Source: Author almach

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