Solar System Quiz

Which Planet is the hottest?

• Earth

• Mercury

• Venus

• Mars

Which planet is a gas planet?

• Earth

• Mars

• Venus

• Jupiter

Which two elements is the Sun made of?

• Hydrogen and Helium

• Oxygen and Helium

• Hydrogen and Nitrogen

• Oxygen and Nitrogen

Which way do most planets rotate?

• Clockwise

• Counter-clockwise

How much of the Earth's surface is covered in water?

• 10%

• 35%

• 50%

• 70%

How many planets in our solar system have life?

• 0

• 1

• 2

• 3

How many dwarf planets are there?

• 0

• 2

• 5

• 7

Why is Pluto not considered a planet?

• Pluto is too small

• Pluto's moon is too big

• Pluto is too far from the Sun

• Pluto doesn't have enough moons

Which planet is the coldest?

• Mars

• Saturn

• Neptune

• Uranus

How many rocky planets are there (planets with a solid surface)?

• 2

• 4

• 5

• 7