The Planet Quiz for Kids: How Well Do You Know Our Solar System?
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The Planet Quiz for Kids: How Well Do You Know Our Solar System?
About this quiz
Planet quiz for kids: 25 questions about the 8 planets of our solar system, from scorching Venus to icy Neptune. 🪐
Which planet is the hottest? Which one has the most moons? Which could float in a giant bathtub? Blast off and test your planet knowledge! Perfect for curious kids, classrooms and family quiz time.
❓ IN THIS QUIZ
- Which planet is the hottest?
- Which planet spins on its side?
- Which planet could float in a giant bathtub?
- Could you stand on Jupiter?
💬 How many did you get right? Tell us your score in the comments. What's your favorite planet?
How to play
- Read the question and look at the pictures.
- Pick your answer before the timer runs out (or switch the timer off).
- See if you were right and read the fun fact.
Answers and fun facts (spoilers!)
- Let's blast off! Which planet is the biggest?
Jupiter
More than 1,300 Earths could fit inside Jupiter! - Which planet is closest to the Sun?
Mercury
Mercury zooms around the Sun in just 88 days! - Which planet is the hottest?
Venus
Venus is even hotter than Mercury, because its thick clouds trap the heat! - Which planet is called the Red Planet?
Mars
Mars is red because of rusty iron dust! - Which planet has the most famous rings?
Saturn
Saturn's rings are made of chunks of ice and rock! - How many planets are in our solar system?
8
There are 8 planets. Pluto became a dwarf planet in 2006! - Which planet spins on its side?
Uranus
Uranus is tipped over so far that it rolls around the Sun on its side! - Which planet is farthest from the Sun?
Neptune
One year on Neptune lasts about 165 Earth years! - Which planet is called the Blue Planet?
Earth
About 71% of Earth's surface is covered by water! - Which planet is the smallest?
Mercury
Mercury is only a little bigger than our Moon! - On which planet do we know there is life?
Earth
Earth is the only planet known to have life. That's us! - What is the Sun?
A star
The Sun is a star, a giant ball of hot glowing gas! - Which planet could float in a giant bathtub?
Saturn
Saturn is the only planet less dense than water! - Which planet is between Earth and Jupiter?
Mars
Mars is the fourth planet from the Sun, right after Earth! - How many moons does Earth have?
1
Earth has just one moon, but Mars has two tiny ones! - Which planet has the most moons?
Saturn
Saturn has well over 200 known moons, more than any other planet! - Which planet has the tallest volcano?
Mars
Olympus Mons on Mars is about 2.5 times taller than Mount Everest! - Which two planets are called gas giants?
Jupiter and Saturn
Jupiter and Saturn are made mostly of hydrogen and helium gas! - Which planet is called Earth's twin?
Venus
Venus is almost the same size as Earth, but much, much hotter! - Which planet is named after the king of the Roman gods?
Jupiter
Jupiter was the king of the Roman gods, a good name for the biggest planet! - What is between Mars and Jupiter?
Asteroid belt
The asteroid belt is full of space rocks circling the Sun! - Where did astronauts first land in 1969?
The Moon
Astronauts first walked on the Moon in July 1969! - Which planet is third from the Sun?
Earth
Mercury, Venus, then Earth. We're number three! - Which planet has the shortest year?
Mercury
A year on Mercury is just 88 Earth days. You'd have lots of birthdays! - Final question! Could you stand on Jupiter?
No, no ground
Jupiter is a gas giant with no solid ground to stand on!