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  1. Volcano - Wikipedia

    Vents that issue volcanic material (including lava and ash) and gases (mainly steam and magmatic gases) can develop anywhere on the landform and may give rise to smaller cones …

  2. Volcano | Definition, Types, & Facts | Britannica

    Jan 7, 2026 · Strictly speaking, the term volcano means the vent from which magma and other substances erupt to the surface, but it can also refer to the landform created by the …

  3. About Volcanoes | U.S. Geological Survey - USGS.gov

    Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt onto the Earth's surface. Volcanic eruptions can last days, months, or even years.

  4. Hawaiʻi Volcanoes National Park (U.S. National Park Service)

    Dec 8, 2025 · Hawai‘i Volcanoes National Park protects some of the most unique geological, biological, and cherished cultural landscapes in the world. Extending from sea level to 13,680 …

  5. VOLCANIC Definition & Meaning - Merriam-Webster

    Jan 9, 2017 · The meaning of VOLCANIC is of, relating to, or produced by a volcano. How to use volcanic in a sentence.

  6. Volcanoes and Volcanic Eruptions - Facts and Information

    Articles, facts, information and photos for volcanoes and volcanic activity. | Geology.com

  7. Volcano facts and information | National Geographic

    Volcanoes are Earth’s geologic architects. They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive. Their explosive force crafts...

  8. Volcanoes and Your Safety | Volcanoes | CDC

    Apr 22, 2024 · Know how to prepare for and protect yourself during and after volcanic eruptions.

  9. Volcanic eruptions - IFRC

    A volcano is an opening in the earth’s surface that allows magma (hot liquid and semi-liquid rock), volcanic ash and gases to escape. They are generally found where tectonic plates come …

  10. Volcano Climate Impact: How Volcanic Eruptions and …

    Jan 8, 2026 · Explore volcano climate impact as volcanic eruptions and atmospheric effects temporarily cool or alter global temperatures, revealing how natural forces interact with human …