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