Exploring the World of Dwarf Planets

What term did ancient astronomers use to describe objects that moved unexpectedly in the sky?

• Asteroids

• Comets

• Stars

• Planets

What year did the International Astronomical Union create the dwarf planet category?

• 2006

• 1989

• 1995

• 2015

What is the third qualification that planets must meet but dwarf planets do not?

• Orbit around the Sun

• Spherical shape

• Clear their orbit of other objects

• Have moons

Which is the only dwarf planet located in the inner solar system?

• Makemake

• Pluto

• Ceres

• Eris

Which spacecraft was the first to visit a dwarf planet?

• Dawn

• Galileo

• Voyager

• New Horizons

How long does it take for Ceres to complete one orbit around the Sun?

• 4.6 years

• 248 years

• 558 years

• 284 years

How many moons does Pluto have?

• One

• Three

• Five

• Seven

Which dwarf planet was named after the Greek goddess of discord and strife?

• Pluto

• Ceres

• Eris

• Haumea

What makes Haumea unique among the dwarf planets?

• It has rings

• It has the most moons

• It is oblong

• It is the largest

When was Makemake discovered?

• 2010

• 2008

• 2005

• 2003