Across
- 3. a large, bowl-shaped cavity in the ground
- 5. Earths only satellite
- 7. The area of air and gas
- 9. giant balls of hot gas
- 10. a gaseous cyan-coloured ice giant
- 12. 17 times the mass of Earth
- 14. largest in the Solar System
- 15. closest in mass and size to its neighbor Earth
Down
- 1. first planet from the Sun
- 2. rocky remnants left over from the early formation of our solar system
- 4. a big ball of rock or iron
- 6. It is a massive, hot ball of plasma, inflated and heated by energy
- 8. the only planet associated with the color ofblood
- 11. It has only one-eighth the average density of Earth
- 13. the only planet that is known to support life