The Inner Solar System

What does "terrestrial" mean in the context of planets?

• Gaseous

• Rocky

• Icy

• Metallic

What powers the Sun?

• Gravitational force

• Nuclear reactions

• Chemical reactions

• Electric energy

How long does it take for sunlight to reach Earth?

• 8 seconds

• 8 minutes

• 8 hours

• 80 minutes

Which part of the inner solar system divides the rocky planets from the gaseous planets?

• The Kuiper Belt

• The Oort Cloud

• The Asteroid Belt

• The Equatorial Belt

How many Earths could fit inside the Sun?

• 100,000

• 1,000,000

• 10,000,000

• 100,000,000

What is the Sun primarily made of?

• Helium

• Oxygen

• Hydrogen

• Carbon

What is Mercury's core primarily made of?

• Silicon

• Rock and iron

• Water and ice

• Gas

How many Mercury-sized planets could fit inside Earth?

• 10

• 18

• 28

• 38

How long does Mercury take to orbit the Sun?

• 58 days

• 88 days

• 188 days

• 365 days

Which Roman god is Mercury named after?

• God of war

• God of the sea

• Messenger of the gods

• God of love