manzword

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Across
  1. 3. the smaller planets can be made of it
  2. 4. if it was bigger, the gravity would be much stronger
  3. 7. a strong hard building material made with gravel
  4. 9. if you do this in that society you are considered a fool
  5. 12. it is 9.8N on our planet
  6. 14. we can have the dinner in the garden if it is fine
  7. 16. an abjective to describe the solar radiations
  8. 18. the universe is 13.7... years old
  9. 19. if there isn't we can't live
  10. 20. if it was smaller and gravity was weaker, it wouldn't hold our ..
  11. 21. if we are too close to it we die
Down
  1. 1. the name of the protagonist
  2. 2. stop moving
  3. 5. a flash of light
  4. 6. neptune consist of ...
  5. 8. how many planets there are in our solar sistem
  6. 10. if the students leave it at home they can't do the version
  7. 11. if there were no water on the earth we would have ....
  8. 13. if there isn't we can't have out seasons
  9. 15. if it was further from the sum it would be too ..
  10. 17. the earth rotates on his ..