Universe Galaxy Solar System

What are galaxies mostly made of?

• stars, planets, and animals
• stars, dust, and gas
• asteroids, planets, and comets
• people, animals, and plants

Which planet is closest to the sun?

• Earth
• Venus
• Mercury
• Mars

Gas giants

• Inner planets
• Outer planets
• Both
• Venus

The 4 inner planets are terrestrial. What does the word "terrestrial" mean?

• made of gases
• made of hard rock
• made of trees
• able to have life 

I am a rock entering a planet's atmosphere.

• meteor
• meteorite
• asteroid
• comet

Which two inner planets have no moons?

• Earth and Mars
• Mars and Venus
• Mercury and Venus
• Venus and Mars

Mercury, Venus, Earth, & Mars

• Inner planets
• Outer planets
• Both
• Pluto

Asteroids "hang out" in our solar system in a place called:

• The Kupier Belt
• The Oort Cloud
• The Planetary Rings
• The Asteroid Belt

Lots of rings

• Inner planets
• Outer planets
• Both
• Mars

Located between the inner and outer planets.

• Sun
• Asteroid belt
• Uranus
• Moons