7E Planet Earth

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Across
  1. 4. the replacement of a dead organisms's tissues with minerals
  2. 5. rock formed from the compaction and cementation of other small rocks and minerals
  3. 7. the shininess of a mineral
  4. 8. the name of the theory first proposed by Aldred Wegener (2 words)
  5. 10. downwards, U-shaped bends in the layers of the crust
  6. 14. the way a mineral breaks
  7. 15. wind or water picking up and carrying sediment away from a location
  8. 16. a solid, pure substance commonly found in Earth's crust
  9. 17. the layer of Earth responsible for creating Earth's magnetic field (2 words)
  10. 18. a plate boundary where plates are moving away from each other
  11. 19. layers of different rock forming the Earth's surface
  12. 20. rock that been created by intense heat and pressure
  13. 21. an extended break or crack in Earth's crust
  14. 25. rock formed from solidifed lava
  15. 27. how difficult a mineral is to scratch
  16. 30. a system of classifiying rock strata within different periods of Earth's history (3 words)
  17. 31. the study of Earth and the materials that make it up
Down
  1. 1. a section of Earth's crust (2 words)
  2. 2. the supercontinent that existed before the modern continents split apart
  3. 3. a fossil that is the actual remains of an ancient organism
  4. 5. when one tectonic plate is pushed beneath another plate at a converging boundary
  5. 6. mountains formed by the rising or dropping of crust along large cracks
  6. 9. a solid substance made from a combination of minerals
  7. 11. mountains formed from the scrunching of Earth's crust
  8. 12. a plate boundary where trenches are commonly found
  9. 13. the outermost layer of Earth
  10. 15. the sudden movement of a tectonic plate
  11. 16. the thickest layer of Earth
  12. 22. a fossil formed from the imprint of an ancient organism
  13. 23. the trace remains of an ancient organism
  14. 24. the scale used to describe the hardness of minerals
  15. 26. the layer of Earth made from solid iron and nickel (2 words)
  16. 28. a plate boundary where plates slide past each other
  17. 29. the scale used to measure the strength of earthquakes