Moons
Planets
Planet Compositions
Characteristics of Planets
Miscellaneous
100

What is the name of Earths moon

Luna

100

What is the correct order of the planets

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

100

What planet is the only known planet with 70% liquid water on the surface

Earth

100

The only known planet with Life

Earth

100

What is axial tilt

The angle of a planets rotation axis 

200

What is Neptunes largest moon

Triton

200

What are the terrestrial planets

Mercury, Venus, Earth, Mars

200

Which planets are made of ices like water, methane, and ammonia.

Uranus and Neptune

200

Which planet has Iron Oxide (rust) on the surface

Mars

200

What is orbital period

The time it takes for a Planet to make a full orbit around the Sun

300

Which planet has the most moons

Saturn

300

What are the Jovian Planets

Jupiter, Saturn Uranus, Neptune

300

Which planets are composed of mostly Hydrogen and Helium

Jupiter and Saturn

300

What is the name of the largest volcano in the solar system and what planet is it on

Olympus Mons and Mars

300

What does AU mean

Astronomical Unit

400

Whats the largest moon in the Solar System

Ganymede

400
Why was Pluto reclassified as a dwarf planet in 2006

It didn't dominate it's orbit

400

Which rocky planet has an atmosphere of 96% Carbon Dioxide

Venus

400

These planets have low densities, thick atmospheres, many moons, and all have rings

Jovian Planets

400

What is retrograde rotation

A Planet spinning in the opposite direction of its orbit
500

What are Mars' moons named

Phobos and Deimos

500

What is the closest planet to the Asteroid Belt

Mars

500

What is Mercury's core mostly made of

Iron

500

Which two planets have retrograde rotation

Uranus and Venus

500

What primordial Greek god is Uranus named after

The god of the sky