About this Study Set
This study set covers Astronomy through
20 practice questions.
A quiz covering facts about the Sun, planets, and celestial bodies in our solar system. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Solar System Essentials study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which planet is known as the 'Red Planet' due to the iron oxide on its surface?
-
A
Venus
-
B
Mars
-
C
Jupiter
-
D
Saturn
2
What is the largest planet in our solar system?
-
A
Neptune
-
B
Saturn
-
C
Jupiter
-
D
Uranus
3
Which planet is famous for its extensive and bright ring system?
-
A
Saturn
-
B
Mars
-
C
Mercury
-
D
Venus
4
What is the hottest planet in our solar system, despite not being closest to the Sun?
-
A
Mercury
-
B
Mars
-
C
Venus
-
D
Jupiter
5
Which celestial body was reclassified as a 'dwarf planet' in 2006?
-
A
Ceres
-
B
Eris
-
C
Pluto
-
D
Makemake
6
What is the primary gas that makes up the Sun?
-
A
Oxygen
-
B
Nitrogen
-
C
Helium
-
D
Hydrogen
7
Which planet orbits the Sun on its side, with an axial tilt of about 98 degrees?
-
A
Uranus
-
B
Neptune
-
C
Saturn
-
D
Jupiter
8
What is the name of the region located between the orbits of Mars and Jupiter that contains many rocky bodies?
-
A
Kuiper Belt
-
B
Asteroid Belt
-
C
Oort Cloud
-
D
Ring System
9
Which planet is the smallest in our solar system?
-
A
Mars
-
B
Venus
-
C
Mercury
-
D
Neptune
10
How many moons does the planet Earth have?
-
A
Zero
-
B
One
-
C
Two
-
D
Three
11
Which planet is known as the 'Windy Planet' and is the furthest from the Sun?
-
A
Uranus
-
B
Saturn
-
C
Neptune
-
D
Jupiter
12
What is the name of the galaxy that contains our Solar System?
-
A
Andromeda
-
B
Milky Way
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C
Sombrero
-
D
Triangulum
13
What force keeps the planets in orbit around the Sun?
-
A
Magnetism
-
B
Friction
-
C
Gravity
-
D
Electricity
14
Approximately how long does it take for light from the Sun to reach Earth?
-
A
8 seconds
-
B
8 minutes
-
C
8 hours
-
D
8 days
15
Which planet has a massive storm known as the 'Great Red Spot'?
-
A
Saturn
-
B
Neptune
-
C
Jupiter
-
D
Uranus
16
What are the 'inner' planets of the solar system primarily made of?
-
A
Gas
-
B
Ice
-
C
Rock
-
D
Liquid
17
Which planet rotates in the opposite direction to most other planets in the solar system?
-
A
Venus
-
B
Mars
-
C
Mercury
-
D
Jupiter
18
What is the name of the star at the center of our solar system?
-
A
Proxima Centauri
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B
Sirius
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C
Betelgeuse
-
D
The Sun
19
Which planet is often called Earth's 'sister planet' because of its similar size and density?
-
A
Mars
-
B
Venus
-
C
Mercury
-
D
Neptune
20
What lies beyond the orbit of Neptune and contains many icy objects?
-
A
Asteroid Belt
-
B
Kuiper Belt
-
C
The Great Rift
-
D
Galactic Center
