Let's learn Earth & Space

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Across
  1. 2. layer of earth.
  2. 5. Method-method that is used to locate the epicenter of an earthquake.
  3. 6. mantle.
  4. 7. floor spreading-proccess which happens when ocean plates move apart and magma rises from the mantle and create new areas of oceanic crust.
  5. 14. waves-A seismic wave that travels through the Earth rather than across
  6. 15. the instrument used to mapped the mid-ocean ridges
  7. 18. time-time difference between the P-waves and S-waves.
  8. 19. type of plate boundary that are sliding past each other.
  9. 22. layer of the earth where magma comes from.
  10. 23. molten material that rises from the mantle to the crust.
  11. 25. Convection- the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the
  12. 28. boundary between the crust and mantle, as inferred from
  13. 29. change in the speed of body waves
  14. 30. to through it.
  15. 32. very large wave that is caused by earthquake.
  16. 33. point within the Earth where the actual movement takes
  17. 34. geologist who proposed the theory of sea-floor spreading.
  18. 37. surface
  19. 38. Plumes-an upwelling of superheated rock from the mantle.
  20. 39. tectonics theory-a theory that states that the Earth's crust is divided into several plates.
  21. 40. theory.
  22. 41. Waves-A seismic wave that travels across the surface of the Earth as
  23. 45. crust.
  24. 46. one who made the continental
  25. 47. arc-formed when two oceanic crusts collide.
  26. 48. type of plate boundary that plates are moving away from each other.
Down
  1. 1. an earthquake.
  2. 3. surface.
  3. 4. earthquake.
  4. 8. point on the surface directly above the focus.
  5. 9. process happens when the oceanic crust sinks beneath the continental crust.
  6. 10. and S-waves at the surface of the Earth that move with a rolling motion.
  7. 11. Drift Theory-a theory that states that there was a big continent before.
  8. 12. recording device that is used to locate the earthqiake's epicenter.
  9. 13. to be the supercontinent 250 million years ago.
  10. 16. type of plate boundary that collides with each other.
  11. 17. geologic feature that may form when plates are moving away from each other.
  12. 20. Pull-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.
  13. 21. waves-A surface seismic wave generated by the interaction of P-
  14. 24. Spot-a concentration of heat in the mantle capable of creating magma
  15. 26. is formed when a continental plate and an ocean plate collides.
  16. 27. ranges-a geologic feature that happens when two continental plates collide.
  17. 31. waves-A wave of energy that travels through the Earth as a result of
  18. 35. may happen during divergence or convergence of plates because of the movement of plates.
  19. 36. Push-one of the possible cause of plate movements which the ridge pushes the old sea-floor towards the trench and it will subduct.
  20. 42. valley-a geologic feature that happens when two continental plates move apart from each other.
  21. 43. part of earth.
  22. 44. waves-A surface seismic wave that cause horizontal shifting of the Earth