Across
- 1. : old inert volcano
- 4. : push pull waves that travel in the directon that the waves travel
- 5. : the supercontinent
- 8. : a source of unpredictable, unplanned danger to people
- 9. : how thick a substance is
- 11. : the southern half of pangea
- 13. : what magma becomes once it reaches the earths surface
- 14. : lava with a rope like surface
- 15. : a form of closed lava tube that flows into water
- 21. : a channel that conveys a fluid
- 22. : A physical quantity characterized by measurement of both magnitude and direction.
- 23. : the boundries between plates
- 27. : a spot in the earth where volcanoes are more likely to form
- 28. : a fracture in the earths curst
- 29. : shows P waves, S waves and surface waves
- 30. : hottest layers of the earth
- 31. : the general term for all pyroclastic material
- 32. : cracks in the volcanoes crust
- 34. : non explosive eruptions volcano
- 37. : semi-rigid part of the middle mantle
- 38. : a tube formed by lava cooling and solidifying
- 39. : lava with a blocky rough surface
- 40. : top layer of the earth
- 41. : the point a earthquake originates from
- 43. : A black or dark-colored volcanic glass, usually of rhyolitic (felsic) composition.
- 44. : what happens when the earth plates move
- 46. : debris formed by a volcanic eruption
- 47. : what is made form melted rock
- 48. : plates pushing together
- 50. : where a plate sinks and slide under another plate
- 51. : crust and upper layer of the mantle
- 53. : the measure of the strength of and earthquake
- 54. : a volcano that is not active or inactive
- 55. : Roman God of fire and the forge, after whom volcanoes are named.
- 56. : Fine grained, dark, mafic igneous rock composed largely of plagioclase feldspar and pyroxene.
Down
- 2. : plates sliding horizontally past each other
- 3. : A large, circular depression in a volcanic area formed by eruption or collapse.
- 6. : 'lava' inside the volcano
- 7. : used to measure shaking amplitude of earth quakes
- 10. : most common type of volcano
- 12. : plates moving apart
- 16. : the study of earthquakes, seismic waves, and their propagation through the Earth.
- 17. : what comes after a earthquake
- 18. : The shape of the land surface.
- 19. : The pattern of elevation of the land surface.
- 20. : the gradual movement of earth continents
- 24. : the state a volcano erupts regularly
- 25. : the movement of a fluid, caused by different temperatures
- 26. : the northern half of pangea
- 33. : seismic waves that travel along the earth crust
- 35. : what the earth crust is sitting on
- 36. : A depression between two plates
- 42. ; moderately explosive volcano
- 45. : Point on Earth's surface directly above an earthquakes focus.
- 49. : areas of earths surface that magma and volcanic gasses pass through
- 52. : Solidified mass of rock where lava has cooled in vent
- 53. : bigger layer of the earth