Science First Grading

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