Across
- 3. fuzzy outer layer
- 4. must be round
- 6. inner core of a comet
- 10. effect the trapping of heat
- 11. planets the latin word terra
- 13. give of its light
- 14. thin disk of small particles
- 15. planet orbits the sun and spherical
Down
- 1. giants name often given to the outer planets
- 2. belt extends to abou 100 times Earths distance
- 5. belt a region between Mars and Jupiter
- 7. cloud streches out more than 1000 times between the Sun and Neptune
- 8. loose collections of ice
- 9. Chunks of rock or dust
- 12. system consist of a sum