Rocks

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Across
  1. 3. Molten rock below ground.
  2. 4. An inverted stalactite.
  3. 5. Icicle-shaped formation that hangs from the ceiling of a cave.
  4. 9. These rocks are made from melting.
  5. 13. A deposit of resembling of soil mixed with plant life.
  6. 14. The amount of mass in a given volume.
  7. 17. Formed from lava.
  8. 18. The gradual deterioration of a rock.
  9. 20. The study of the ocean.
  10. 22. Breakage in flat sheets.
  11. 23. The study of the earth's physical features.
  12. 24. A rock is ________ when you can see layers on a metamorphic rock.
  13. 27. The study of space.
  14. 28. Powder left behind by a mineral.
  15. 29. The study of the atmosphere.
  16. 31. Formed from magma.
  17. 32. Breakage with jagged, rough edges.
  18. 33. Fragments of pre-existing rock.
  19. 35. The shine of a rock.
Down
  1. 1. When 2 plates collide.
  2. 2. Laying down of sediment by weather.
  3. 3. A rock transformed by heat and pressure.
  4. 6. An educated guess as a starting point for further investigation.
  5. 7. The downward movement of a plate under another plate.
  6. 8. The process of being worn down by the atmosphere.
  7. 10. This type of rock can contain fossils.
  8. 11. What you compare the results of an experiment to.
  9. 12. When 2 plates separate for each other.
  10. 15. Something that changes in an experiment.
  11. 16. The process in which hot and cold air separate.
  12. 19. Molten rock above ground.
  13. 21. Mohs ________ scale
  14. 25. A huge mass of ice.
  15. 26. A natural fuel that is non-renewable.
  16. 30. An area made up of limestone.
  17. 34. A natural opening in the earth large enough for human exploration.