Across
- 6. - study of earth
- 7. - Our home planet
- 9. - study of numbers
- 11. - Centre of the solar system
- 12. - study of plants
- 14. The closest planet to the Su
- 16. - dwarf Planet
- 17. - study of mind
- 19. - rate of change of an object's position
- 20. - study of cancer
Down
- 1. - study of matter and energy\
- 2. - number of planets in the
- 3. system
- 4. - study of chemicals
- 5. - dental doctor
- 8. - The hottest planet in the solar system
- 10. - Largest Planet
- 13. - study of neurons
- 15. - red planet
- 18. - study of past