Across
- 6. how minerals reflect light
- 7. planets seem to move backwards
- 8. has 1 or 2 tails
- 11. planetary satellite
- 13. inventor of telescope
- 16. start of the universe
- 17. planetisimal
- 19. closest to the Sun
- 20. Sun's atmosphere
- 21. very hard rock
- 22. common rock in our area
- 23. deposition forms this type of rock
- 25. leftover after ore processing
- 26. where two crustal plates meet
- 27. banded rock
Down
- 1. ocean crust does this
- 2. color of a mineral
- 3. developed laws of planetary motion
- 4. aethenosphere is found here
- 5. distance from Earth to Sun
- 9. shows the topography on a map
- 10. why we know the universe is expanding
- 12. table salt is this category of mineral
- 14. most common mineral family
- 15. rock produced by volcanoes
- 17. farthest from the sun
- 18. hardness scale
- 23. not the big bang theory
- 24. planets orbit in this way