Across
- 2. Center of the Solar system
- 4. The Giant Gas
- 7. The Blue Planet
- 10. The solid Earth
- 13. Nearest to the sun
- 14. the study of the oceans.
- 15. The Red Planet
- 16. has 15 moons
Down
- 1. All the water on Earth
- 3. The windiest planet
- 5. the study of our planet
- 6. All the gases surrounding the Earth
- 8. the study of the Earth's motions and objects in space.
- 9. the study of the atmosphere; weather and climate.
- 11. The Hottest Planet
- 12. Surrounded by Ring