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