Planets review

What two primary gases make up most of the Sun?

• Oxygen and Nitrogen

• Hydrogen and Helium

• Carbon Dioxide and Methane

• Sulfur and Argon

How many days does it take for Earth to complete one orbit around the Sun?

• 24 hours

• 60 days

• 365 days

• 243 days

Which planet is unique because it rotates in the opposite direction compared to most other planets?

• Mercury

• Earth

• Mars

• Venus

What is Mars sometimes called due to the rusty iron in its soil?

• The Blue Planet

• The Gas Giant

• The Red Planet

• The Ringed Planet

What is the rocky area located between Mars and Jupiter called?

• Kuiper Belt

• Asteroid Belt

• Oort Cloud

• Galactic Arm

Which planet in our solar system has the most known moons?

• Saturn

• Jupiter

• Uranus

• Neptune

How many Earth years does it take for Neptune to complete one full orbit around the sun?

• 84 years

• 165 years

• 248 years

• 30 years

Which planet is unique for rotating on its side?

• Venus

• Saturn

• Uranus

• Neptune

How many planets are in our solar system?

• 6

• 7

• 8

• 9