Volcanoes

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Across
  1. 3. – A wide, gently sloping volcano formed from fluid lava
  2. 7. – Determines magma viscosity and eruption style
  3. 8. – A stationary source of heat in the mantle that can form volcanic islands
  4. 9. – Bowl shaped depression at the summit of a volcano
  5. 10. – Tectonic plate around which the Ring of Fire forms
  6. 11. – A long crack in Earth’s crust where magma can rise
  7. 12. – Mountain formed from erupting magma
  8. 16. – A vertical pluton
  9. 17. – Molten rock beneath Earth’s surface
  10. 18. – A volcano that is currently inactive but may erupt again
  11. 19. – Magma that reaches the surface
  12. 20. – The release of magma, gas, and ash from a volcano
  13. 21. – Fine particles ejected during an explosive eruption
  14. 24. – Process of one plate sliding under another, often forming volcanoes
  15. 25. – Activity related to earthquakes and volcanic movement
  16. 26. – Earth’s crust is broken into these large pieces
  17. 27. – Type of crust with high silica magma and explosive eruptions
Down
  1. 1. – Lava low in silica and viscosity, causing less explosive eruptions
  2. 2. – Opening through which lava and gases escape
  3. 4. – Boundary where plates move apart, forming volcanoes
  4. 5. – Area with the highest concentration of volcanoes along the Pacific
  5. 6. – Released from fumaroles and vents during eruptions
  6. 10. – Super heated gas and rock cloud from violent eruptions
  7. 13. – Movement of Earth’s crustal plates that causes earthquakes and volcanoes
  8. 14. – The layer of Earth where magma originates
  9. 15. – What lava does once it reaches Earth’s surface
  10. 20. – A volcano that hasn’t erupted in over 10,000 years and isn’t expected to erupt
  11. 21. – A volcano that has erupted in the last 10,000 years
  12. 22. – A body of igneous rock formed underground
  13. 23. – A horizontal pluton