Superlatives
Inner Planets
Outer Planets
Where Is It/What Is It?
Miscellaneous
100
The planet with the most eccentric orbit
What is Mercury?
100
This planet has a retrograde rotation
What is Venus?
100
The Jovian planets in order from largest to smallest
What is "Jupiter, Saturn, Uranus, Neptune"?
100
It lies between Mars and Jupiter
What is the Asteroid Belt?
100
This planet was predicted by perturbations in the orbit of the next nearer planet
What is Neptune?
200
The densest planet
What is Earth?
200
The source of Mars' red color
What is iron oxide? (or, iron in the soil)
200
An unusual feature of Uranus' rotation
What is "it rotates on its side"?
200
Home to Pluto and thousands of other small objects orbiting the Sun
What is the Kuiper belt?
200
The "reason for the season"
What is axial tilt?
300
The largest planet
What is Jupiter?
300
The planet with the greatest average density
What is Earth?
300
The main constituents of the Jovian planets atmospheres?
What are hydrogen and helium?
300
the largest volcano in the solar system
What is Olympus Mons?
300
The brightest object in the sky, after the Sun and the Moon
What is Venus?
400
The farthest planet from the Sun
What is Neptune?
400
The planet with the highest surface temperature, and the reason why
What is "Venus and the greenhouse effect"?
400
The planet with the greatest number of moons
What is Jupiter?
400
An asteroid that follows the same orbit as a planet
What is a trojan?
400
The gas that makes up the atmosphere of Venus and Mars
What is carbon dioxide?
500
The planet with lowest density
What is Saturn?
500
The planet most like Earth's moon
What is Mercury?
500
The source of the blue color on Uranus and Neptune
What is methane in the atmosphere?
500
The result of a combination of convection in a molten core and rotation.
What is a magnetic field?
500
The planets that would have "phases" if observed from Saturn
What are Mercury, Venus, Earth, Mars, and Jupiter?
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