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Across
  1. 3. Seismic wave that travels across the surface of the earth as opposed through it.
  2. 5. surface.
  3. 7. Seismic wave that travels through the earth rather than across its surface
  4. 9. Top layer of earth.
  5. 13. Hot molten material that rises from the mantle to the crust.
  6. 15. It is formed when a continental plate and an ocean plate collides.
  7. 16. Method that is used to locate the epicenter of an earthquake.
  8. 18. A type of plate boundary that are sliding past each other.
  9. 21. Geologic feature that may form when plates are moving away from each other.
  10. 23. The one who made the continental drift theory.
  11. 25. Wave of energy that travels through the earth as a result of
  12. 26. A type of plate boundary that plates are moving away from each other.
  13. 27. The boundary between the crust and mantle, as inferred from the change in the speed of body waves.
  14. 28. Proposed to be the supercontinent 250 million years ago.
  15. 30. Formed when two oceanic crusts collide.
  16. 31. Deepest part of earth.
  17. 38. Geologic feature that happens when two continental plates collide.
  18. 40. Upper mantle.
  19. 41. Other possible cause of plate movements which the weight of the subducting plate pulls the trailing slab into the subduction zone just like a tablecloth slipping off the table and pulling items with it.
Down
  1. 1. This may happen during divergence or convergence of plates because of the movement of plates.
  2. 2. Thickest layer of the earth where magma comes from.
  3. 4. A recording device that is used to locate the earthqiake's epicenter.
  4. 6. A concentration of heat in the mantle capable of creating magma.
  5. 8. Time difference between the p-waves and s-waves.
  6. 10. Is the instrument used to mapped the mid-ocean ridges
  7. 11. A type of plate boundary that collides with each other.
  8. 12. An upwelling of superheated rock from the mantle.
  9. 14. Geologic feature that happens when two continental plates move apart from each other.
  10. 17. A very large wave that is caused by earthquake.
  11. 19. The very slow creeping motion of earth's solid silicate mantle caused by convection currents carrying heat from the interior to the
  12. 20. Theory that states that the earth's crust is divided into several plates.
  13. 22. Surface seismic wave generated by the interaction of p-waves and s-waves at the surface of the earth that move with a rolling motion.
  14. 24. The point on the surface directly above the focus.
  15. 29. Theory that states that there was a big continent before.
  16. 32. Process which happens when ocean plates move apart and magma rises from the mantle and create new areas of oceanic crust.
  17. 33. Outer crust.
  18. 34. This process happens when the oceanic crust sinks beneath the continental crust.
  19. 35. Surface seismic wave that cause horizontal shifting of the earth during an earthquake.
  20. 36. The point within the earth where the actual movement takes
  21. 37. One of the possible cause of plate movements which the ridge pushes the old sea-floor towards the trench and it will subduct.
  22. 39. A geologist who proposed the theory of sea-floor spreading.