Across
- 3. the milky way is this type of galaxy
- 4. the scale of hardness
- 5. rocks are made up of these
- 8. the rocks which are formed from volcanic eruptions
- 9. the process of breaking down rocks
- 10. molten rock which flows from the mantle
- 11. the texture of the mark the mineral leaves behind
- 14. an object used to observe the universe
- 16. an instrument used by early sailors
- 17. the study of the universe
- 18. they study fossils
- 19. magma which flows onto the earths surface
- 21. describes how well light travels through it
- 22. the brightest star
- 24. an object which orbits another
- 26. the process of rocks moving from one place to another
- 27. the milky way is an example
- 28. stars are mostly made up of this
Down
- 1. evidence of life in the past
- 2. the closest star to our solar system
- 6. a group of stars
- 7. the appearance of the snap of the material
- 12. the process of change in rocks
- 13. 12 very well known constellations
- 15. sedimentary rocks are formed from this
- 20. how a mineral reflects light
- 21. our atmosphere makes the stars look like they are doing this
- 23. clouds of glowing gas
- 25. the measurement that our universe is measured with
- 28. space telescope