Questions in this quiz: Planets of the Solar System
The eight planets in order. Sizes, distances, day/year lengths, moons, atmospheres, and distinguishing features from Mercury to Neptune.
- Which planet has the shortest year, completing an orbit around the Sun in about 88 Earth days? — Options: Mercury, Venus, Mars, Earth
- Which planet rotates so slowly that a single day on it lasts longer than its entire year? — Options: Mercury, Venus, Mars, Neptune
- Which planet's atmosphere is composed of roughly 96% carbon dioxide, creating a runaway greenhouse effect with surface temperatures near 465°C? — Options: Mars, Mercury, Venus, Jupiter
- Which planet is home to Olympus Mons, the tallest known volcano in the solar system? — Options: Venus, Mars, Mercury, Earth
- Which planet is the largest in our solar system, with a mass more than twice that of all the others combined? — Options: Saturn, Neptune, Uranus, Jupiter
- Which planet is best known for its prominent, bright ring system made largely of ice particles? — Options: Jupiter, Uranus, Saturn, Neptune
- Which planet in our solar system is closest to the Sun?
