Planet Dash guide
Planet quiz: Solar System questions and answers
Test what you know about the Sun, the planets and their moons. Each question has its answer hidden underneath: tap Answer to check. For a quiz that flies you to every answer in 3D, try Planet Dash's quiz rounds and Daily Dash.
The questions
- Which planet has the most moons?
Answer
Saturn
- Which planet has the biggest volcano in the Solar System?
Answer
Mars
- Which is the biggest planet?
Answer
Jupiter
- Which is the smallest planet?
Answer
Mercury
- Which planet is the hottest?
Answer
Venus
- Which planet spins on its side, like a rolling ball?
Answer
Uranus
- Which planet takes the longest to spin round once?
Answer
Venus
- On which planet is one spin longer than a whole year?
Answer
Venus
- Which planet has the shortest day?
Answer
Jupiter
- Which planet has the Great Red Spot, a storm bigger than Earth?
Answer
Jupiter
- Which planet has the fastest winds?
Answer
Neptune
- Which planet is closest to the Sun?
Answer
Mercury
- Which planet is farthest from the Sun?
Answer
Neptune
- Which planet has the shortest year?
Answer
Mercury
- Which planet is red because its dust is rusty?
Answer
Mars
- Which is the only world where we know there is life?
Answer
Earth
- Which planet was the first found with a telescope?
Answer
Uranus
- Which planet was found by maths before anyone saw it?
Answer
Neptune
- Which planet would float in a giant bath?
Answer
Saturn
- Which planet has the brightest rings?
Answer
Saturn
- On which planet would you weigh the most?
Answer
Jupiter
- Which is the biggest moon in the Solar System?
Answer
Ganymede
- Which moon has thick air, thicker than Earth's?
Answer
Titan
- Which moon has the most volcanoes erupting?
Answer
Io
- Which moon shoots fountains of water into space?
Answer
Enceladus
- Which big moon goes round its planet backwards?
Answer
Triton
- Which moon is dark on one side and bright on the other?
Answer
Iapetus
- Which dwarf planet has a heart-shaped plain of ice?
Answer
Pluto
- Which dwarf planet spins so fast it's shaped like an egg?
Answer
Haumea
- Which dwarf planet lives in the asteroid belt?
Answer
Ceres
Play it in 3D
Planet Dash turns these into quick rounds: "Which world is this?" shows a planet turning with no name, "Which planet has…" asks about records, and "Put them in order" checks you know which is closest, biggest or hottest. After every answer the camera flies to the right one. There's a Kids round with no clock, read aloud, and a Daily Dash: ten questions, the same for everyone each day.
Questions
What are good planet quiz questions for kids?
Start with records: the biggest planet (Jupiter), the hottest (Venus), the one with the brightest rings (Saturn), the red one (Mars), the smallest and closest to the Sun (Mercury), and the one that spins on its side (Uranus).
What is the hardest planet question?
Try: on which planet is one spin longer than a whole year? It's Venus: it takes 243 Earth days to spin once, but only 225 days to go round the Sun.
Which is the biggest moon in the Solar System?
Ganymede, one of Jupiter's moons. It is about 5,268 km across, bigger than the planet Mercury.