Practice Planet Quiz

True or False: The outer planets are much smaller than the inner planets?

• True

• False

What are the two dominant elements in Earth's atmosphere?

• oxygen and carbon dioxide

• nitrogen and oxygen

• hydrogen and helium

Which is NOT a characteristic of Venus?

• It is the second closest planet to the Sun.

• It has a strong gravitational field full of moons.

• It contains an array of different geological features.

• Its atmosphere contains thick clouds of sulfuric acid.

What is the planet that has the great red spot and many moons?

• Neptune

• Jupiter

• Mars

• Uranus

What planet has the largest ring system?

• Neptune

• Pluto

• Mercury

• Saturn

What planet is closest to the Sun?

• Jupiter

• Mars

• Mercury

• Moon

Venus has the highest surface temperature of all the planets in our solar system. Which is the best explanation for this?

• Venus rotates very slowly on it's axis.

• Venus is very close to the sun.

• Venus's atmosphere has thick clouds and carbon dioxide.

• Venus has a chemical.

What planet do scientists think once had surface water or flowing rivers?

• Venus

• Mars

• Jupiter

• Uranus

Which planet has the shortest year?

• Venus

• Mercury

• Neptune

• Mars

Which planet is characterized by polar ice caps, a pink sky, a rust-colored surface, large volcanoes, and surface channels?

• Uranus

• Pluto

• Mars

• Saturn