Flashcards
Planet Uranus - astronomy questions
Who discovered Uranus?
Nicolas Copernicus
William Herschel
Giovanni Cassini
Uranus is the .... planet from the Sun.
Uranus is:
ice giant
gas giant
Uranus orbits the Sun once every:
84 years
72 years
65 years
92 years
Composition of Uranus atmosphere is:
81% hydrogen, 16% helium, 3,3% methane
86% hydrogen, 13% helium, 3,3% methane
86% hydrogen, 12% helium, 2,3% methane
83% hydrogen, 15% helium, 2,3% methane
83% hydrogen, 15% helium, 2,3% methane
Uranus average distance from the Sun is roughly:
20 AU
22 AU
16 AU
18 AU
The difference between Uranus minimum and maximum distance from the Sun is:
1.2 AU
2.2 AU
0.4 AU
1.8 AU
The Uranian axis of rotation is approximately parallel with the plane of the Solar System, with an axial tilt of:
96.25°
92.39°
91.12°
97.77°
Uranus's mass is roughly .... times that of Earth.
How many known moons orbit Uranus?
27
35
11
24
How many rings does Uranus have?
4
13
7
16
Largest moon of Uranus is:
Titania
Ariel
Oberon
Umbriel
Among the Uranian satellites, .... appears to have the youngest surface with the fewest impact craters and .... is the oldest.
Uranus escape velocity equals:
24.3 km/s
31.3 km/s
18.9 km/s
21.3 km/s
Is Uranus a planet with retrograde rotation?
yes
no
Wind speeds on Uranus can reach:
480 km/h
1180 km/h
1360 km/h
900 km/h
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