Rocks, Minerals, and Geological Events

1234567891011121314151617181920212223
Across
  1. 6. The deepest part of the ocean floor; made up of rolling hills and flat plains.
  2. 9. A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
  3. 11. The region where 2 tectonic plates are in contact.
  4. 12. A plate boundary where 2 plates move past each other in opposite directions.
  5. 13. Molten rock spews out from mantel to Earth as ash, lava, and gases; major events occur when dense plate subducts less dense plant.
  6. 14. The color of a mineral in powdered form.
  7. 15. A plate boundary where 2 plates move toward each other.
  8. 17. A type of rock that forms from the cooling of molten rock at or below the surface.
  9. 19. The comparison of the density of one material as it relates to another.
  10. 21. Geological event that occurs when continental plates of equal density converge, resulting in mountain chains.
  11. 22. The way the surface of a mineral reflects light.
  12. 23. Geological event in which the shaking of Earths surface occurs due to the movement of rock at plate boundaries.
Down
  1. 1. Earths rocks change from one type into another over time due to various Earth processes.
  2. 2. Sections of the Earths crust that move due to convection currents.
  3. 3. A measure of how easily a mineral can be scratched.
  4. 4. A measure of how much mass is contained in a given volume.
  5. 5. The soft layer of the mantle on which the lithosphere floats.
  6. 7. The movement of material due to differences in temperature.
  7. 8. A naturally formed, inorganic solid that has a specific chemical formula and repeating 3-dimensional structure.
  8. 10. A current caused by the rising of heated material and sinking of cooled material.
  9. 14. A denser plate is pushed downward beneath a less dense plate when plates converge; occurs at continental to oceanic boundaries and oceanic to oceanic boundaries.
  10. 16. A plate boundary where 2 plates move away from each other.
  11. 18. A type of rock that forms when particles from other rocks or the remains of plants or animals are pressed and cemented together.
  12. 20. Earth's crust and solid upper mantle, broken into tectonic plates.