Show:
Discovery
Moons
Planet or Not?
Characteristics
100
The official discoverer of Pluto.
Who is Clyde Tombaugh?
100
The number of known moons.
What is 5?
100
The diameter of Pluto compared to Earth.
What is 1/5?
100
Makes up Pluto's core.
What is a dense rocky material?
200
The age of the girl who suggested the name Pluto.
What is 11 years old?
200
Most well known binary system in the solar system.
What is the Pluto-Charon system?
200
Pluto's current classification.
What is a dwarf planet?
200
The composition of Pluto's atmosphere.
What is nitrogen?
300
The name Pluto was initially known as.
What is Planet X?
300
A moon of unknown mass.
What is Kerberos? or What is Styx?
300
Classification of Pluto's orbit.
What is irregular?
300
Pluto's composition.
What is rock, ice, frozen nitrogen, and methane?
400
The observatory that discovered Pluto.
What is Lowell Observatory?
400
The moon that was discovered most recently.
What is Styx?
400
4 false planets discovered in the 1800s
What are Ceres, Pallas, Vesta, and Juno?
400
A 100 lb person would weigh this on Pluto.
What is 6.7 lb?
500
The math used to hypothesize Pluto's existence.
What are Newtonian mechanics?
500
The first moon discovered.
What is Charon?
500
4 reasons Pluto is no longer considered a planet.
May Vary.
500
At one point in the orbit, Pluto is closer to the Sun than this planet making the orbit very eccentric.
What is Neptune?