Volcanoes By: genevieve shadron

What is a volcano? A volcano is a mound of earth formed by layers and layers of rock and tephra. It has magma chambers, conduits and vents.
Volcanoes have magma chambers, magma conduits, vents, lava, magma, pyroclastic flow, dikes and sills. A magma chamber is a reservoir that fills with lava. A magma conduit is the plumbing of the volcano, the magma flows through these. Vents are located close to the surface of the volcano where the lava comes out of. Lava is magma above ground. Magma is melted rocks underground. Pyroclastic flow is super heated clouds of volcanic materials ranging from ash to volcanic bombs. Dikes and Sills are created by molten, pressurized magma when it intrudes into solid volcanic rock.
How do volcanoes work? Magma pools in the magma chamber deep inside the volcano, then the magma gets heated up even more because of convection currents. When the magma reaches a certain temperature is starts to rise into the magma conduits. Then the magma erupts through the main vent and the magma which is now lava is pouring down the sides of the volcano. In most eruptions there is also volcanic ask and dust.
What do they look like? Volcanoes can vary in shapes and sizes. For example, Lava domes are almost completely flat and are often mistaken with rolling hills. But others, like composite volcanoes are tall and wide, like your stereotypical volcano.
Where do they form? Volcanoes in and around hot spots, spreading centers, fault zones and subduction zones. The main process that creates volcanoes is when a oceanic and a continental plate converge or separate. This creates volcanoes because it leaves space for the hot magma to rise closer and closer to earth's surface.
Eruption styles? Eruption styles differ from volcano to volcano. For example, the lava dome erupts in a slow oozing fashion and the lava is so hot that it will vaporize groundwater when it comes in contact with it. Unlike the lava dome, cinder cones eject volcanic ash and dust when erupt like your stereotypical volcano, high and mighty. The type of eruption depends on what type of magma the volcano contains.
Mount Popocatépetl

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Created with images by skeeze - "volcano lava flowing" • Pexels - "mouth panorama panoramic" • Guillaumesens - "volcano etna italy" • Pexels - "ashes eruption landscape" • skeeze - "volcano halema‘uma‘u lava lake sunset" • skeeze - "volcano lava flowing"

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