Asteroids
Comets
Kuiper Belt
Asteroid Belt
General
100

This is the most common type of asteroid and is made mostly of carbon

What is a C-type asteroid?

100

This part of a comet is its solid center.

What is the nucleus?

100
The Kuiper belt is located beyond this planet.

What is Neptune?


100

Most Asteroids orbit the Sun in this region. 

What is the Asteroid Belt? 

100

This is the largest object in the Asteroid Belt. 

What is Ceres? 

200

Most Asteroids have this shape because their gravity is too weak to make them round.

What is an irregular shape?

200

This fuzzy cloud surrounds a comet's nucleus

What is the coma? 

200

The Kuiper Belt is approximately this many AU from the Sun. 

What is 30-55 AU. 

200

The Asteroid Belt lies between these 2 planets. 

What are Jupiter and Mars? 

200

These are the two small moons of Mars that are likely captured Asteroids. 

What are Phobos and Deimos? 

300

This Asteroid type is made mostly of metalls. 

What is an M-type asteroid? 

300

Name one of the two tails found on a comet. 

What is the dust tail? 

What is the ion tail? 

300

Most objects in the Kuiper Belt are made primarily of this. 

What is Ice? 

300

These empty regions in the Asteroid Belt are caused by Jupiter's gravity. 

What are Kirkwood Gaps? 

300

A planet must clear this in order to be considered a true planet.

What is its orbital neighborhood?



400

About this percentage of near-Earth asteroids have a moon?

What is about 16%?

400

As a comet gets close to the sun, this happens to its ice. 

What is it vaporizes/sublimates?

400

The most recognized dwarf planets are found in this region. 

What is the Kuiper belt? 

400

The Asteroid Belt is located about this many AU from the sun. 

What is 2-4 AU?

400

Ceres contains about this fraction of the total mass of the Asteroid Belt.

What is ~one-third?



500

NASA intentionally crashed what spacecraft into Dimorphos in 2022?

What is DART?

500

This is where most comets come from. 

What is the Oort Cloud or Kuiper Belt? 

500

This is the region beyond the Kuiper Belt. 

What is the Oort Cloud? 
500

These asteroids share a planet's orbit 60 degrees ahead or behind it. 

What are Trojan / Greek Asteroids? 

500

These three requirements must all be met for an object to be classified as a planet.

What are: (1) orbit a star, (2) be nearly spherical due to its own gravity, and (3) clear its orbital neighborhood?