Across
- 4. the rock and ice formed small bodies called...
- 7. rocky objects and are either too small or too large to be a dwarf planet.
- 8. turns into a streak of light once it enters Earth's atmosphere.
- 10. Some of its has and dust stream outward, forming a tail.
- 12. The first sentence is "When a comet gets close to a sun, it heats up and starts to glow.
- 13. Clouds of gas and dust form a fuzzy outer layer called....
- 14. Meteoroids that pass through the atmosphere and are found on Earth's surface are called...
- 15. chunks of rock or dust smaller than asteroids are called....
Down
- 1. it's what Pluto is...
- 2. the planets are so large they are often called...
- 3. Trapping of heat by the atmosphere is called...
- 5. thin disk of small particles of ice and rock...
- 6. beyond the Kuiper belt.
- 9. loose collections of ice, dust, and small rocky partials.
- 11. the solid inner core of a comet.