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  2. Simply put, volcanoes form when the hot molten materials beneath the earth rise and escape into the crust. The hot material – magma, forms either from the melted sunken materials or from the interior part of the earth which is made up of hot liquid materials and gases.
    eartheclipse.com/environment/natural-disaster/ho…

    How volcanoes form

    • Constructive plate boundary volcanoes At constructive plate boundaries, the tectonic plates are moving away from one another. ...
    www.bgs.ac.uk/discovering-geology/earth-hazards/…
    Volcanoes on Earth form from rising magma. Magma rises in three different ways. Magma can rise when pieces of Earth's crust called tectonic plates slowly move away from each other. The magma rises up to fill in the space. When this happens underwater volcanoes can form. Magma also rises when these tectonic plates move toward each other.
    spaceplace.nasa.gov/volcanoes2/en/
    Volcanoes often form along where plate tectonics make contact. The friction produced melts the Earth’s crust, creating magma. Extremely heated magma creates pressure and slowly rises to the surface through the fractures between the tectonic plates. Over time it finds its way out through a volcanic vent.
    www.actforlibraries.org/how-are-volcanoes-formed/
    The majority of volcanoes in the world form along the boundaries of Earth's tectonic plates—massive expanses of our planet's lithosphere that continually shift, bumping into one another. When tectonic plates collide, one often plunges deep below the other in what's known as a subduction zone.
    www.nationalgeographic.com/environment/article/v…
     
  3. People also ask
    How do volcanoes form?A volcano is an opening in a planet or moon’s crust through which molten rock, hot gases, and other materials erupt. Volcanoes often form a hill or mountain as layers of rock and ash build up from repeated eruptions. Volcanoes are classified as active, dormant, or extinct.
    How does a volcanic eruption occur?In the eruption process, the molten material turns into lava when it gushes out through the openings onto the earth’s surface. The process of volcanic formation begins as a result of tectonic plate movements on the earth’s surface. The tectonic plates are huge rock pieces floating on the surface of the mantle.
    Where do volcanoes come from?Some volcanoes pop up in random places, often far from the edge of a tectonic plate. These volcanoes are found over "hot spots." A hot spot is an intensely hot area in the mantle below the Earth's crust. The heat that fuels the hot spot comes from very deep in the Earth. This heat causes the mantle in that region to melt.
    How do island arc volcanoes form?Island arc volcanoes occur when one plate descends, or subducts, under another plate. Subduction allows water from the subducting plate to be driven upward, off the subducting plate and into the mantle wedge. This lowers the melting point of the mantle, and it melts to form magma. This magma will rise and leak into the crust forming a volcano.
     
  4. Volcanoes - National Geographic Society

    WEBOct 19, 2023 · Learn what volcanoes are, how they form, and how they are classified. Find out about the types of eruptions, the composition of …

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      WEBMay 13, 2024 · Learn how volcanoes form from the eruption of molten rock, hot gases, and fragments from Earth's crust or other planets. Explore the different types of volcanoes, their landforms, and their role in …

    • Plate Tectonics and Volcanic Activity - National …

      WEBApr 29, 2024 · Learn how volcanoes form at the boundaries of Earth's tectonic plates, where they move apart or collide. Explore different types of volcanoes, eruptions, and hazards with maps, photos, and videos.

    • What Is a Volcano? | NASA Space Place – NASA …

      WEBMay 6, 2024 · Learn how volcanoes form on Earth and other planets when magma rises from the interior. Find out the difference between active, dormant, and extinct volcanoes and see examples of eruptions.

    • Volcano - Wikipedia

      WEBThe form and style of eruption of a volcano is largely determined by the composition of the lava it erupts. The viscosity (how fluid the lava is) and the amount of dissolved gas are the most important characteristics of …

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