Inner Planets Quiz

Which planet is closest to the Sun?

• Venus

• Earth

• Mercury

• Mars

Venus's thick atmosphere creates the...

How many moons does Venus have?

• 0

• 1

• 2

• 3

How many days does it take for Mars to orbit the Sun?

• 225

• 687

• 88

• 365

Earth's atmosphere is MAINLY filled with...

• Nitrogen

• Oxygen

• Helium

• Argon

How many moons does Mars have?

• 1

• 2

• 3

• 4

What is the hottest planet in our solar system?

• Mercury

• Earth

• Mars

• Venus

How long ago did the Solar System form?

• 3.7 Billion Years Ago

• 2.9 Billion Years Ago

• 4.5 Billion Years Ago

• 6.4 Billion Years Ago

Which planet rotates in the opposite direction?

• Venus

• Mars

• Mercury

• Earth

Could Mars have had water in the past?

• YES

• NO