Earth and Space Science

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Across
  1. 4. verb when water is suddenly moved due to plate activity
  2. 6. When plates collide and mountains are formed
  3. 7. Theory that all large land masses were once part of Pangaea
  4. 8. Layer of Earth below the Crust
  5. 9. Synonym of size
  6. 10. When plates slide along each other and release energy in the form of Earthquakes
  7. 13. Top layer of the Earth
  8. 15. To gradually move apart
  9. 16. When two plates slide along each other
  10. 20. Opposite of pull force
  11. 21. Edge of a plate usually formed in the near mid-ocean ridges
  12. 22. Geometry deals with
  13. 24. Occurs when plates diverge
  14. 26. Last name of American geologist who theorised seafloor spreading
  15. 28. Shift when seismic activity occurs
  16. 30. When rocks/plates are recycled into magma due to subduction
  17. 33. A collective word for phenomena that may occur from seismic activity
  18. 34. Having the ability to attract metallic objects
  19. 37. Large body of water
  20. 38. When particles heat up and become less dense and rise, conversely when particles cool and clump together causing magma to sink.
  21. 40. Pertaining to ice
  22. 41. verb when water moves in all directions ripples
  23. 42. supercontinent
  24. 44. Large scale movement, relating to crust
  25. 45. First name of American geologist who theorised seafloor spreading
  26. 47. Synonym for characteristics
  27. 48. Layer in the Earth that Mantle convection occurs in
  28. 49. Where oceanic plates meet the ocean
  29. 52. Volcanic activity
  30. 54. When biological organisms decay, they form?
  31. 55. There are two kinds of this: potential and kinetic
Down
  1. 1. The point where two or more plates meet
  2. 2. 'harbour wave'
  3. 3. Organic material formed over millions
  4. 5. When two plates come together
  5. 11. When two plates converge and the more denser plate moves underneath the less dense plate
  6. 12. On this... magnitude 6.0 = 30*5 more energy than magnitude 5.0
  7. 14. Used to measure magnitude of earthquakes
  8. 17. location above the focus point for earthquakes
  9. 18. When two plates move apart
  10. 19. point in a wave where it begins to crash
  11. 22. Banded layers that have formed
  12. 23. Last name of geologist who theorised continental drift
  13. 25. When substances are layered over millions of years
  14. 27. Layers of plates that reverse polarities every 200-300k years
  15. 29. A device that measures earthquakes
  16. 31. Another informal descriptive word for plate tectonic
  17. 32. aka Crust
  18. 35. origins of earthquakes
  19. 36. If you ain't top tier, you are...?
  20. 39. Data to support observations and theories
  21. 43. First name of geologist who theorised continental drift
  22. 46. Structures which have magma residing within
  23. 50. Opposite of absorb
  24. 51. Opposite of push force
  25. 53. Are made up of many minerals