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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.

Author
almach

Time
5 mins

Type
Multiple Choice

Quiz #
90,847

Updated
Dec 03 21

# Qns
20

Difficulty
Tough

Avg Score
11 / 20

Plays
1972

Last 3 plays: Guest 64 (13/20), Nala2 (7/20), Guest 23 (1/20).

One at a Time - Single Page - Timed Game

Question 1 of 20

1. Uranus axial tilt is ____________ degrees. Hint

25.6

26.5

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Question 2 of 20

2. Uranus was found by ______________. Hint

Sir William Herschel

Catherine Herschel

John Herschel

Johannes Kepler

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Question 3 of 20

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

William Herschel

Johann Bode

John Herschel

King George

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Question 4 of 20

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

132

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Question 5 of 20

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

None

Three

Two

One

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Question 6 of 20

6. What is the diameter of Uranus? Hint

40,000 kilometers

15,000 kilometers

88,000 kilometers

51,000 kilometers

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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.

True

False

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Question 8 of 20

8. The atmosphere of Uranus is mostly _______________. Hint

Hydrogen and Helium

Hydrogen and methane

Helium and methane

Hydrogen and carbon

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Question 9 of 20

9. Does Uranus have rings?

Yes

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Question 10 of 20

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

True

False

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Question 11 of 20

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

Eight

Five

Nine

Four

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Question 12 of 20

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

Blue

Yellow

White

Red

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Question 13 of 20

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

Yes

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Question 14 of 20

14. What is the largest satellite of Uranus. Hint

Oberon

Titania

Ariel

Miranda

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Question 15 of 20

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

Eight

None

Twenty four

Ten

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Question 16 of 20

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

Umbriel

Miranda

Ariel

Oberon

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Question 17 of 20

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

Ariel, Umbriel, Miranda, Titania and Oberon

Miranda, Ariel, Umbriel, Titania and Oberon

Miranda, Titania, Oberon, Ariel and Umbriel

Oberon, Titania, Umbriel, Ariel and Miranda

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Question 18 of 20

18. Voyager 1 flew by Uranus in 1986.

True

False

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Question 19 of 20

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

Titania and Miranda

Titania and Oberon

Umbriel and Oberon

Ariel and Oberon

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Question 20 of 20

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

1801

1777

1787

1781

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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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