How much do you know about Pluto and the Dwarf Planets?
Test your knowledge by taking the Pluto and Dwarf Planets quiz.
All you need to do is click on an answer for each question.
Have fun!

1: What is Pluto?
a) A planet
b) A dwarf planet
c) An asteroid

3: How long does it take Pluto to rotate, or spin around, once?
a) About 203 Earth days
b) About 6.5 Earth days
c) 2 Earth hours

5: What is the surface of Pluto like?
a) Covered by a sea of boiling water
b) Covered with ice
c) Rocky with volcanoes blasting icy liquid into the sky

7: What is the name of Pluto’s largest moon?
a) Makemake
b) Mickey
c) Charon

9: When was Pluto discovered?
a) 1930
b) 1890
c) 2001

11: Which of these statements is true?
a) New Horizons is a space probe launched in 1930.
b) New Horizons is the telescope used to discover Pluto.
c) New Horizons is a probe that will reach Pluto in 2015.

13: Which dwarf planet is closest to the Sun?
a) Ceres
b) Pluto
c) Eris

15: What is the Kuiper Belt?
a) A group of asteroids between Mars and Jupiter
b) A ring of moons circling Pluto
c) An area where Pluto and other dwarf planets orbit the Sun

17: What shape is the dwarf planet Haumea?
a) Egg-shaped
b) Shaped like a lumpy potato
c) Banana-shaped

19: Which statement is false?
a) The surface of Makemake is covered with ice.
b) Makemake is a dwarf planet.
c) A year on Makemake lasts for 283 Earth years.

2: How wide is Pluto?
a) 1,430 miles (2,302 km) wide
b) 250 miles (402 km) wide
c) 600 miles (966 km) wide

4: How long is a year on Pluto?
a) Nearly 10 Earth years
b) About 1 million Earth years
c) Nearly 248 Earth years

6: How many moons have scientists discovered orbiting Pluto?
a) 22
b) 10
c) 5

8: Who or what is Pluto named after?
a) A famous cartoon character
b) A dog belonging to the scientist who discovered Pluto
c) The Roman god of the underworld and afterlife

10: Which statement is false?
a) Pluto is larger than Mars.
b) Pluto used to be called a planet.
c) Charon is about half the size of Pluto.

12: How many dwarf planets have been discovered so far?
a) 3
b) 5
c) 12

14: How big is Ceres?
a) It is almost as wide as the United States.
b) It is bigger than Earth.
c) It is almost as wide as Texas.

16: Which of these statements is true?
a) Ceres is both a dwarf planet and an asteroid.
b) Ceres orbits the Sun in the Kuiper Belt.
c) Ceres is farther from the Sun than Pluto.

18: Which statement is true?
a) Haumea has two known moons.
b) Haumea has no moons.
c) A year on Haumea lasts for 307 Earth years.

20: Which dwarf planet travels farthest from the Sun?
a) Pluto
b) Eris
c) Makemake

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version of these questions.