Buckle up, space cadet: eight planets, one Sun and lots of cosmic surprises are waiting for you!
Which planet is closest to the Sun?
Venus
Mercury
Mars
Earth
Right! Mercury zooms around the Sun in just 88 days, so a year there is super short.
Not quite! It's Mercury, the smallest planet, which orbits the Sun in just 88 days.
Which is the biggest planet in our solar system?
Jupiter
Saturn
Neptune
Uranus
Yes! Jupiter is so huge that more than 1,000 Earths could fit inside it.
Good try! The answer is Jupiter, a giant so big that over 1,000 Earths could fit inside.
Which planet is known as the Red Planet?
Correct! Mars looks red because its dust is full of iron oxide, which is basically rust.
Oops! It's Mars, which is red because its soil contains rusty iron oxide.
What is the Sun?
A planet
A comet
A moon
A star
Shining answer! The Sun is a star, a giant ball of hot gas that gives us light and heat.
Not this time! The Sun is a star, a huge ball of glowing hot gas at the center of our solar system.
Which planet is the hottest, even though it isn't closest to the Sun?
Hot stuff! Venus has a thick cloudy atmosphere that traps heat like a super-strong blanket.
Close! It's Venus: its thick atmosphere traps heat, making it even hotter than Mercury.
Which planet is famous for its bright, wide rings?
Ring-tastic! Saturn's rings are made of billions of chunks of ice and rock.
Nice try! It's Saturn, whose rings are made of countless pieces of ice and rock.
How many planets are in our solar system?
7
9
10
8
Spot on! There are 8 planets, since Pluto was renamed a dwarf planet in 2006.
Not quite! There are 8 planets. Pluto used to count, but it became a dwarf planet in 2006.
How long does it take Earth to travel once around the Sun?
One day
One month
About one year
About ten years
Exactly! One trip around the Sun takes about 365 days, which is one year.
Almost! Earth takes about 365 days, one year, to orbit the Sun. One day is one spin on its axis.
Which planet is farthest from the Sun?
Far out! Neptune is so far away that one year there lasts about 165 Earth years.
Good guess! It's Neptune, so distant that one Neptune year lasts about 165 Earth years.
What is the belt of rocky objects between Mars and Jupiter called?
The Kuiper Belt
The Asteroid Belt
The Milky Way
The Comet Belt
Rock on! The Asteroid Belt is full of space rocks orbiting between Mars and Jupiter.
Not quite! It's the Asteroid Belt. The Kuiper Belt is much farther out, beyond Neptune.
Which planet spins on its side, like a rolling ball?
Yes! Uranus is tipped over so much that it seems to roll around the Sun.
Tricky one! It's Uranus, which is tilted almost completely on its side.
What keeps the planets moving around the Sun?
Wind
Magnetism
Gravity
Sunlight
Great thinking! The Sun's gravity pulls on the planets and keeps them in orbit.
Good try! It's gravity: the Sun's strong pull keeps the planets circling around it.
How out-of-this-world was this quiz?
Perfect! Every answer right!
12 of 12 right
100%
Challenge your friends to a race through the solar system!
Without one, it says “A friend”.
Please choose another nickname.
Question 1: Which planet is closest to the Sun?
Question 2: Which is the biggest planet in our solar system?
Question 3: Which planet is known as the Red Planet?
Question 4: What is the Sun?
Question 5: Which planet is the hottest, even though it isn't closest to the Sun?
Question 6: Which planet is famous for its bright, wide rings?
Question 7: How many planets are in our solar system?
Question 8: How long does it take Earth to travel once around the Sun?
Question 9: Which planet is farthest from the Sun?
Question 10: What is the belt of rocky objects between Mars and Jupiter called?
Question 11: Which planet spins on its side, like a rolling ball?
Question 12: What keeps the planets moving around the Sun?
Made with AI. This quiz was made with AI, which can make mistakes.
