9. Comets

What are the four planets closest to the sun called?

• Rocky Planets

• Gas Giants

• Comets

• Asteroids

What are comets made of?

• Ice, dust, and rock

• Gas and dust

• Metals and rock

• Frozen gasses and dust

What is the name of our solar system's most famous comet?

• Halley's Comet

• Ida's Comet

• Edmund's Comet

• Dactyl's Comet

Where are most asteroids found in our solar system?

• Between Mars and Jupiter

• Close to the Sun

• In the asteroid belt

• In the outer reaches of the solar system

What are asteroids mostly made of?

• Rock with metals

• Ice and dust

• Gas and dust

• Frozen gasses and rock

What happens when a flying space rock enters the Earth's atmosphere?

• It starts to burn up and becomes a meteor

• It turns into a shooting star

• It crashes into another asteroid

• It becomes a comet

What is a meteorite?

• A flying space rock that hits the Earth

• A small piece of an asteroid

• A chunk of ice, dust, and rock

• A big dirty snowball in orbit around the Sun

What is the main thing in common between comets and asteroids?

• They are both flying space rocks

• They both have tails

• They are both made of ice and dust

• They are both planets

What is the name of the asteroid that has its own moon?

• Ida

• Halley

• Dactyl

• Edmund

What is the most likely cause of the extinction of the dinosaurs?

• A big meteorite hitting the Earth

• The formation of the asteroid belt

• The collision of two comets

• The explosion of a gas giant