Tectonic Plates, Seismic Waves, Faulting!

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Across
  1. 1. the solid rock just below the soil
  2. 4. structure what does plate tectonics mean
  3. 6. instrument to measure seismic waves
  4. 8. the top of the Earth's surface
  5. 10. plates move into one another
  6. 12. waves that produce entirely horizontal motion
  7. 13. the Earth's outer shell
  8. 14. a scientist who studies earthquakes and seismic wave
  9. 17. what is under crust
  10. 19. created when two contiental plates collide and the colliding crust is compressed and pushed upwards
  11. 20. another phrase for p waves
  12. 22. triggers large earthquakes
  13. 25. body waves that arrive before the surace waves edmitted by an earthquake
  14. 26. waves of energy caused by a sudden breaking of rock
  15. 28. plates dives beneath the other creathing this
  16. 30. the creater of a love wave
  17. 31. fastest kind of seismic wave
  18. 32. the zone where the oceanic plates are moving away from eachother
  19. 33. the permanent displacement of the ground due to the event
  20. 37. waves that can only move along the surface of the planet
Down
  1. 1. waves that tavel through the Earth's inner layers
  2. 2. a fracture in a rock formation where there has been movement of the blocks of rock on either side of the plane of fracture
  3. 3. a part of the upper mantle that exhibits plastic properties
  4. 5. the deepest point on Earth
  5. 7. a wave that rolls along the ground
  6. 9. how many tectonic boundries are there?
  7. 11. faults that occu when shearing stress causes rocks on either side of the crack to slide parallelto the fault plane between them
  8. 14. a plate of ocean dives under a landmass
  9. 15. the study of earthquakes and seismic waves that move through and around the earth
  10. 16. second wave you feel in an earthquake
  11. 18. the cause of faults
  12. 21. the rocks above move upward relative to the rocks below the plane
  13. 23. strikeslipfaults where the crack is part of a boundary between two tectonic plates
  14. 24. who proposed the theory of contiental drift
  15. 27. formed when plates are tugged apart
  16. 29. radiate seismic energy as body and surface waves
  17. 34. plates move sideways in relation to eachother causing things like Earthquakes
  18. 35. what are plates made of
  19. 36. plates move apart
  20. 38. how do the plates change over a long period of time