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Volcano

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Volcano

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  1. Volcano

  2. Volcano ~ An opening in the Earth’s crust where hot gas, rocks and magma erupt; they occur along plate boundaries.

  3. Exciting, or Dangerous—Both?

  4. Volcano Pacific Ring of Fire A 40, 000 km (24, 000 mi) horseshoe shaped area in the Pacific Ocean where tectonic plates meet. It is the home to 452 volcanoes (75% of the world’s volcanoes) and 90% of the world’s earthquakes.

  5. Volcano Classification: • Active • Intermittent • Dormant • Extinct

  6. Volcano Active ~ Erupt constantly (daily, weekly, monthly, yearly)

  7. Volcano Kilauea, Hawaii

  8. Volcano Arenal, Costa Rica

  9. Volcano Guatemala

  10. Volcano Tvashtar, Jupiter

  11. Largest Volcano in the Solar System Olympus Mons, Mars

  12. Volcano Intermittent ~ Erupt on a fairly regular basis (every few years, or so)

  13. Volcano Mt. St. Helens, Washington

  14. Volcano

  15. Volcano Mt. Vesuvius, Italy

  16. Volcano

  17. Volcano Dormant ~ Erupted a long time ago, have not in a while, but could again.

  18. Volcano Mt. Misti, Peru

  19. Volcano Mt. Fuji, Japan

  20. Volcano Mt. Lassen, California

  21. Volcano Mt. Kilimanjaro, Africa

  22. Volcano Extinct ~ Has not erupted for several years (perhaps millions) and won’t anymore

  23. Volcano Mt. Teranaki, New Zealand

  24. Volcano Mt. Kenya, Africa

  25. Volcano Main Types • Cinder Cone • Shield Cone • Composite Cone

  26. Volcano Cinder Cone ~ Small volcanoes (less than 1000 feet tall) with steep slopes made up of cinders (hard bits of lava) Violent explosions/eruptions

  27. Volcano Chile

  28. Volcano Kilauea, Hawaii

  29. Volcano Paricutin, Mexico

  30. Volcano Shield ~ Large mountains (more than 10, 000 feet) with gentle slopes made from lava in the cracks of the Earth. Some of these volcanoes can reach over 25, 000 feet with much of the volcano under the ocean (Mauna Loa, Hawaii).

  31. Volcano Mauna Loa, Hawaii

  32. Volcano Mauna Loa, Hawaii

  33. Volcano Mauna Loa, Hawaii

  34. Volcano Composite ~ Large mountains above sea level made up of lava and rock bits (cinders ) Violent eruptions and steep slopes.

  35. Volcano Mt. Fuji, Japan

  36. Volcano Mt. Vesuvius, Italy

  37. Volcano Shishaldin, Alaska

  38. Volcano Eruptions ~ What comes out of a volcano when it erupts?

  39. Volcano Lava ~ molten rock that will either ooze or flow quickly; the temperature usually is around 2, 000 degrees. The speed and shape of a lava flow depends on the type of volcano and strength of the eruption.

  40. Volcano Ooze

  41. Volcano

  42. Volcano

  43. Volcano Flow

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  46. Volcano Pyroclastic Flow ~ a fast moving current of hot gas, ash, and rock traveling down the side of the volcano at speeds up to 200 mph with temperatures of over 500 degrees Celsius.

  47. Volcano Mayon, Philippines

  48. Volcano

  49. Volcano