Basic Chemistry Trivia
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Planets Trivia
Test your knowledge of the solar system. Planets, moons, and space facts.
Answer each question below. Select a choice or reveal the answer for instant feedback. There is no timer — work at your own pace.
Full set25 / 25 questions
Question 1easy
How many planets are in our solar system (according to the IAU)?
The correct answer is C. 8
Question 2easy
Which planet is closest to the Sun?
The correct answer is C. Mercury
Question 3easy
Which planet is known as the Red Planet?
The correct answer is B. Mars
Question 4easy
Which planet is the largest in our solar system?
The correct answer is A. Jupiter
Question 5easy
Which planet has prominent rings that are easily visible from Earth?
The correct answer is C. Saturn
Question 6easy
On which planet do we live?
The correct answer is A. Earth
Question 7easy
What is Earth's natural satellite called?
The correct answer is C. The Moon
Question 8medium
Which planet is the hottest in our solar system (due to its thick atmosphere)?
The correct answer is D. Venus
Question 9medium
In what order from the Sun is Earth?
The correct answer is D. Third
Question 10medium
Which planet was reclassified as a dwarf planet in 2006?
The correct answer is D. Pluto
Question 11medium
Jupiter's Great Red Spot is what type of feature?
The correct answer is B. A giant storm
Question 12medium
How many moons does Mars have?
The correct answer is C. 2
Question 13medium
Which planet is the smallest in our solar system?
The correct answer is B. Mercury
Question 14medium
Which planet has the most moons in our solar system?
The correct answer is C. Saturn
Question 15medium
Uranus and Neptune are often called what type of planets?
The correct answer is C. Ice giants
Question 16medium
Which planet rotates on its side (axis tilted about 98 degrees)?
The correct answer is C. Uranus
Question 17medium
The asteroid belt is located between which two planets?
The correct answer is C. Mars and Jupiter
Question 18hard
Which moon of Saturn is the only moon in the solar system with a dense atmosphere?
The correct answer is D. Titan
Question 19hard
Which planet has the shortest day (fastest rotation) in our solar system?
The correct answer is A. Jupiter
Question 20hard
What is the name of the largest moon in our solar system?
The correct answer is B. Ganymede
Question 21hard
Which planet has a day longer than its year?
The correct answer is D. Venus
Question 22hard
Neptune was discovered in 1846. How was it first detected?
The correct answer is B. By mathematical prediction of its position
Question 23hard
Which planet has the strongest winds in the solar system?
The correct answer is B. Neptune
Question 24hard
Mars's two moons are named after the horses that pulled the chariot of which Greek god?
The correct answer is B. Ares (Mars)
Question 25easy
Which planet is known for its prominent ring system?
The correct answer is C. Saturn
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