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