Volcano CW 2

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Across
  1. 2. national park in Wyoming that marks a huge hot spot under the North American Plate
  2. 7. a bowl-shaped area that forms around a volcano’s central opening
  3. 8. pebble-sized particles that are thrown into the air when an explosive volcano erupts
  4. 10. liquid magma that reaches the Earth’s surface
  5. 14. scientists that study the Earth
  6. 15. these are underwater mountain ranges that form at divergent boundaries
  7. 16. volcano that erupted In 1980
  8. 18. fine, rocky particles as small as a speck of dust that are thrown into the air when an explosive volcano erupts
  9. 19. a deposit of hardened magma in a volcano’s pipe
  10. 20. a slab of volcanic rock formed when magma squeezes between layers of rock
  11. 21. a molten mixture of rock-forming substances, gases, and water from the mantle
  12. 23. a wide, gently sloping mountain made of layers and formed by quiet eruptions
  13. 25. a material found in magma that is formed from the elements oxygen and silicon
  14. 27. a mass of rock formed when a large body of magma cools inside the crust
  15. 29. larger pieces that can range from the size of a golf ball to the size of a car that are thrown into the air when an explosive volcano erupts
  16. 31. term used to describe a volcano that is no longer active and unlikely to erupt again
  17. 32. rock that forms from lava that is cooler and thicker
  18. 35. the large hole at the top of a volcano formed when the roof of a volcano’s magma chamber collapses
  19. 36. type of eruption when the magma is hot or low in silica
  20. 37. a volcano erupts violently if its magma has __________ _________ content
  21. 38. a point in a process
  22. 41. formed when uplift pushes a large body of hardened magma toward the surface.
  23. 42. not currently active but able to become active in the future
  24. 44. a mountain that forms in Earth’s crust when molten material, or magma, reaches the surface
  25. 45. one of the large pieces that Earth’s crust is broken into
Down
  1. 1. these landscapes form from repeated floods of lava that form high, level plateaus
  2. 3. a string of volcanoes that form as the result of subduction of one oceanic plate beneath a second ocean plate
  3. 4. when one plate sinks below the other plate at convergent boundaries
  4. 5. the exterior or outermost layer of an object
  5. 6. the flow of ash, cinders, bombs, and gases down the side of a volcano during an explosive eruption
  6. 9. the force that causes a volcano to erupt
  7. 11. a long tube that through which magma moves from the magma chamber to Earth’s surface
  8. 12. the opening through which molten rock and gas leave a volcano
  9. 13. type of eruption it the magma is high in silica
  10. 17. rock that forms from fast-moving hot lava that is thin and runny
  11. 18. these can form long the boundaries of Earth’s plate
  12. 22. an area where material from deep within Earth’s mantle rises through the crust and melts to form magma
  13. 24. the area covered by lava as it pours out of a volcanic vent
  14. 26. a tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials
  15. 28. the pocket beneath a volcano where magma collects
  16. 30. a volcano forms above a hot spot when a __________ _________ erupts through the crust and reaches the surface
  17. 33. one major belt of volcanoes that rim the Pacific Ocean
  18. 34. Earth’s rocky, outer layer
  19. 39. lines along which something ends
  20. 40. a steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs piled up around a volcano’s opening
  21. 43. a possible danger