Volcanoes Explained: How Earth Builds and Erupts

Volcanoes Explained: How Earth Builds and Erupts

By Volcanoes Explained: How Earth Builds and EruptsScienceEducation
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Volcanoes Explained: How Earth Builds and Erupts episodes

  • Why Some Volcanoes Flow and Others Explode
    At one volcano, glowing lava pours from a vent and moves across the ground. At another, a column of ash climbs into the sky as gas and shattered rock burst outward.
    Inside this episode:
    - Eruptions Form A Spectrum
    - Viscosity Means Resistance To Flow
    - Silica Builds Networks
    - Gas Is Dissolved Deep Below
    - A Runny Magma Can Release Gas
    Sources include the references linked below.
    Sources and further reading:
    - [U.S. Geological Survey, Eruption Styles](https://volcanoes.usgs.gov/volcanic_ash/eruption_styles.html)
    - [U.S. Geological Survey, How Do Volcanoes Erupt?](https://www.usgs.gov/faqs/how-do-volcanoes-erupt)
    This episode explains general earth science and is not current volcano, hazard, evacuation, or emergency guidance. Follow local authorities and official observatories for present conditions.
    Follow Volcanoes Explained for another clear journey through how Earth builds and erupts.
    15 min
  • What Volcanic Ash Really Is
    The word ash suggests something soft and powdery, the gray remains of paper or wood after a fire.
    Inside this episode:
    - Ash Is A Size Category
    - How Magma Becomes Particles
    - Water Can Shatter Rock Too
    - A Grain Under The Microscope
    - The Column Rises
    Sources include the references linked below.
    Sources and further reading:
    - [U.S. Geological Survey, Volcanic Ash](https://volcanoes.usgs.gov/volcanic_ash/ash.html)
    This episode explains general earth science and is not current volcano, hazard, evacuation, or emergency guidance. Follow local authorities and official observatories for present conditions.
    Follow Volcanoes Explained for another clear journey through how Earth builds and erupts.
    14 min
  • How Volcanoes Build Islands
    An island can begin where no land is visible.
    Inside this episode:
    - Not Every Island Has The Same Origin
    - Beginning Under Pressure
    - The Shield Stage
    - Breaking The Surface
    - Lava Extends The Shore
    Sources include the references linked below.
    Sources and further reading:
    - [U.S. Geological Survey, Geology of Hawaii Volcanoes National Park](https://www.usgs.gov/geology-and-ecology-of-national-parks/geology-hawaii-volcanoes-national-park)
    - [U.S. Geological Survey, Evolution of Hawaiian Volcanoes](https://www.usgs.gov/observatories/hvo/evolution-hawaiian-volcanoes)
    This episode explains general earth science and is not current volcano, hazard, evacuation, or emergency guidance. Follow local authorities and official observatories for present conditions.
    Follow Volcanoes Explained for another clear journey through how Earth builds and erupts.
    14 min
  • From Magma to Lava: A Journey Through a Volcano
    Far beneath a volcano, rock begins to change. It does not enter a giant underground lake of fire. Instead, part of the solid rock melts within a hot, pressurized mixture of crystals, liquid, and dissolved gas.
    Inside this episode:
    - Earth Is Mostly Solid
    - Why Magma Rises
    - A Mixture Full Of Crystals And Gas
    - Magma Can Stop
    - A Volcano Is Not Hollow
    Sources include the references linked below.
    Sources and further reading:
    - [U.S. Geological Survey, How Do Volcanoes Erupt?](https://www.usgs.gov/faqs/how-do-volcanoes-erupt)
    This episode explains general earth science and is not current volcano, hazard, evacuation, or emergency guidance. Follow local authorities and official observatories for present conditions.
    Follow Volcanoes Explained for another clear journey through how Earth builds and erupts.
    15 min

About Volcanoes Explained: How Earth Builds and Erupts

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Volcanoes Explained follows magma, lava, gas, ash, and moving plates through the systems that build and reshape Earth. Each episode uses plain language, distinguishes general science from current…