science

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Across
  1. 2. Underground reservoir of molten rock.
  2. 3. Broad, gently sloping volcano from fluid lava.
  3. 8. Falling water level between high and low tide.
  4. 11. Molten rock beneath Earth's surface.
  5. 13. Water changing from liquid to gas.
  6. 15. Water falling from atmosphere
  7. 19. Two continental plates colliding, forming mountains.
  8. 23. Study of mountains.
  9. 24. Release of volcanic material from a volcano.
  10. 27. Plates sliding past each other horizontally.
  11. 28. Period of no current between flood and ebb tides.
  12. 29. Amount of water vapor in the air.
  13. 32. Molten rock on Earth's surface.
  14. 35. Region of seismic/volcanic activity in continental interiors.
  15. 39. Plates moving away from each other.
  16. 40. Intense thunderstorms surrounding a storm's eye.
  17. 41. Lowest part of a volcano's structure.
  18. 43. Crack in Earth's surface for magma eruption.
  19. 44. Weakest tides when Moon/Sun are at right angles.
  20. 45. Inclined side of a volcano.
  21. 47. Bowlshaped depression at volcano's top.
  22. 48. Winds flowing towards a central area.
  23. 50. Large, conical volcano from layers of lava/ash; explosive.
  24. 52. Large sections of Earth's crust moving.
Down
  1. 1. Moderately explosive with dense ash clouds.
  2. 2. Series of connected mountains.
  3. 4. Explains largescale movement of Earth's lithosphere.
  4. 5. Strong, narrow current flowing out to sea.
  5. 6. Deflection of moving objects due to Earth's rotation.
  6. 7. The half of Earth with the most land.
  7. 9. Gentle, effusive lava flows.
  8. 10. Thin, dense crust under oceans.
  9. 12. Dangerous pyroclastic flows.
  10. 14. Primary opening for volcanic material.
  11. 16. Water vapor changing back to liquid.
  12. 17. Natural features of Earth's surface.
  13. 18. Thick, less dense crust forming continents.
  14. 20. "Ring of Fire" with many volcanoes and earthquakes.
  15. 21. Natural movement of air.
  16. 22. Steam explosion from magma heating water.
  17. 25. Earth's outermost solid layer.
  18. 26. Lowest sea level.
  19. 30. MidAtlantic Ridge, where new ocean crust forms.
  20. 31. Mildly explosive, intermittent bursts of lava.
  21. 33. Plates moving towards each other.
  22. 34. Most powerful, explosive eruption with high ash columns.
  23. 36. Small, steep volcano from loose cinders.
  24. 37. Difference between high and low tide levels.
  25. 38. Strongest tides when Earth, Moon, Sun align.
  26. 40. Calm center of a tropical cyclone.
  27. 42. Vents in Earth's crust erupting molten rock, ash, gases.
  28. 46. Highest sea level.
  29. 49. Highest point of a volcano.
  30. 51. Rise and fall of sea levels due to Moon/Sun gravity.