Across
- 3. a tool to measure the hardness of a rock
- 5. rapid expansion
- 7. Largest layer of the Earth
- 9. a type of crystalline rock
- 12. a type of non-vesicular rock(Glassy)
- 16. strength of the rock
- 18. closest planet to the Sun
- 22. softest mineral
- 26. protects us from UV rays
- 27. the border of the crust and mantle
- 28. a naturally occurring, inorganic substance
- 31. formed through contact of heat and/or pressure
- 33. a planet with rings
- 35. a rock in outer space
- 38. composed of compressed clay
- 40. the first zone in the atmosphere
- 42. the only planet that can sustain life
- 43. a rock that has air pockets
- 46. 7th planet
- 47. how the rock will break
- 48. a object composed of minerals
- 49. 2nd planet of the solar System
- 51. an elementary particle
- 52. hardest mineral
Down
- 1. Molten rock under the Earths Crust
- 2. a rock formed through rapidly cooled lava
- 4. component of Sandstone
- 6. 8th planet
- 8. Biggest planet in our Solar System
- 10. a type of sedimentary rock, can be made of of shells
- 11. Expansion stops
- 13. the movement of the mantle
- 14. a sedimentary rock formed from evaporation
- 15. ability to reflect light
- 17. eroded material from other rock types
- 19. 2nd zone in the atmosphere
- 20. a type of sedimentary rock made from dead plants
- 21. 4th planet
- 23. the look of a rock
- 24. a class of rock that is made up of sediments
- 25. an asteroid that entered earth's atmosphere
- 29. amount of space taken up
- 30. Center layer of the Earth
- 32. study of origins of the universe
- 34. an unproven idea
- 36. study of celestial objects
- 37. The thinnest layer of the Earth
- 39. the color of powder a rock leaves when scratched
- 41. an element in the earths core
- 44. a stage in the Big bang
- 45. molten rock on the surface of the Earth
- 50. the center of the solar system