Questions & Answers
Browse all 25 questions from the
Elementary Astronomy Challenge study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which planet is known for its prominent rings, which are made of ice and rock particles?
-
A
Jupiter
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B
Saturn
-
C
Uranus
-
D
Neptune
2
What is the closest star to Earth?
-
A
Proxima Centauri
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B
Alpha Centauri A
-
C
Sirius
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D
The Sun
3
Which of these is NOT a dwarf planet in our solar system?
-
A
Pluto
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B
Ceres
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C
Eris
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D
Titan
4
What phenomenon causes day and night on Earth?
-
A
The Moon orbiting the Earth
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B
The Earth revolving around the Sun
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C
The Earth rotating on its axis
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D
The Sun moving around the Earth
5
What celestial body orbits the Earth?
-
A
Mars
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B
Venus
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C
The Moon
-
D
The Sun
6
Which gas makes up the majority of the Sun's composition?
-
A
Oxygen
-
B
Nitrogen
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C
Helium
-
D
Hydrogen
7
What is the name of our galaxy?
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A
Andromeda
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B
Triangulum
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C
The Milky Way
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D
Whirlpool
8
Which planet is often called Earth's 'twin' due to its similar size and mass?
-
A
Mercury
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B
Mars
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C
Venus
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D
Jupiter
9
What causes the different phases of the Moon?
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A
The Earth's shadow falling on the Moon
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B
The Sun's light reflecting off the Moon as it orbits Earth
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C
Clouds in Earth's atmosphere blocking the view
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D
The Moon changing its size
10
Which planet is known as the 'Red Planet'?
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A
Jupiter
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B
Saturn
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C
Mars
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D
Venus
11
What are comets primarily made of?
-
A
Rock and metal
-
B
Gas and plasma
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C
Ice, dust, and rock
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D
Liquid water
12
Which planet is the largest in our solar system?
-
A
Saturn
-
B
Jupiter
-
C
Neptune
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D
Uranus
13
What is the most common type of star in the universe?
-
A
Blue giants
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B
White dwarfs
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C
Red dwarfs
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D
Supergiants
14
What causes shooting stars?
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A
Small stars falling from the sky
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B
Pieces of rock and dust burning up in Earth's atmosphere
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C
Spaceships travelling at high speed
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D
Reflections from the Moon
15
Which is the only planet in our solar system that is known to have liquid water on its surface?
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A
Mars
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B
Venus
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C
Earth
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D
Mercury
16
What is the outermost layer of the Sun's atmosphere called?
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A
Photosphere
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B
Chromosphere
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C
Corona
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D
Core
17
Which planet takes the longest time to orbit the Sun?
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A
Uranus
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B
Neptune
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C
Saturn
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D
Jupiter
18
What are the rocky bodies that orbit the Sun, mostly found between Mars and Jupiter?
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A
Comets
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B
Meteoroids
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C
Asteroids
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D
Moons
19
What is the process by which stars produce energy?
-
A
Photosynthesis
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B
Nuclear fission
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C
Nuclear fusion
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D
Combustion
20
Which planet is closest to the Sun?
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A
Venus
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B
Earth
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C
Mercury
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D
Mars
21
What causes a solar eclipse?
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A
The Earth passing between the Sun and the Moon
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B
The Moon passing between the Sun and the Earth
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C
The Sun disappearing behind a cloud
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D
The Moon casting a shadow on the Sun
22
What force keeps planets in orbit around the Sun?
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A
Magnetism
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B
Gravity
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C
Centrifugal force
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D
Friction
23
Which planet has the Great Red Spot, a giant storm?
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A
Saturn
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B
Mars
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C
Jupiter
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D
Neptune
24
What is a large, glowing ball of hot gas that produces its own light and heat?
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A
Planet
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B
Moon
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C
Asteroid
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D
Star
25
Which of these is a terrestrial planet?
-
A
Jupiter
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B
Saturn
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C
Neptune
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D
Venus
