Members of the Solar System

1. Comets are made of dust, rock, and frozen _______.
3. Small rock moving through space before it enters Earth's atmosphere.
4. A distant, spherical region beyond the Kuiper Belt, believed to be the home of long-period comets.
5. Unlike comets, asteroids are generally rocky and ____.
6. The solid, icy, and dusty center of a comet.
10. Comets have this feature pointing away from the sun due to solar wind.
13. A crater is formed by this kind of event.
14. What occurs when Earth passes through a cometary debris field, creating a meteor _______.
16. Often called a "dirty snowball," it develops a tail near the sun.
18. Common name for a meteor burning in the atmosphere.
21. Its gravity affects the main asteroid belt.
22. A dwarf planet larger than Pluto located in the Kuiper Belt.
23. The main component of a comet that melts near the sun.

2. The region between Mars and Jupiter populated by rocky remnants.
7. The glowing head of a comet, formed of gas and dust when heated.
8. Another name for asteroids (minor __________).
9. An exceptionally bright fireball that often explodes in the atmosphere.
11. Asteroids _____ in size and shape.
12. The largest asteroid in the main belt, also classified as a dwarf planet.
15. A common metal found in many asteroids.
17. A rocky or metallic space object that survives passage through Earth's atmosphere and hits the ground.
19. Pluto and Eris are classified as _______ planets.
20. Type of belt beyond Neptune containing icy bodies and Pluto.