Across
- 3. it emights lights
- 4. what is our natural satellite?
- 7. is the subject used by the astronomer
- 9. is an astract idea
- 10. where do we live?
- 11. element in the 14th group and 2nd periond
- 15. is a big astronomicalò object
- 18. ther is a table for it
- 19. atoms that have a charge
- 20. it's the star of the solar system
Down
- 1. what is oxygen?
- 2. he discover gravity
- 5. element in the 16th group and 2nd period
- 6. is a part of the atom that have no charge
- 8. it can be natural or artificial and it orbit around the planet
- 12. fusion (7,6) is something that happend inside the sun
- 13. is the center of a atom
- 14. mixture (11,7) is a mixture whre you can't see the substances inside
- 16. planet (5,6) what is the scientific name for pluton
- 17. is the sixth planet of our solar sistem