A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber …

Nov 26, 2025 · volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases. A volcanic eruption is an …

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.

Nov 16, 2025 · Which Volcanoes are Erupting? - List & map of Active Volcanoes Erupting at Present RSS EN DE ELES FR ITRU Show in other currency

Jul 5, 2023 · Eruption cloud - A cloud of volcanic ash, tephra, and gases that forms downwind of an erupting volcano. Eruption column - A vertical pillar of superheated volcanic ash, tephra, …

May 21, 2025 · 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 …

Home » Volcanoes and Volcanic Eruptions Volcanoes and Volcanic Eruptions What is a Volcano? A volcano is a vent in Earth's surface where magma, gas, and ash escape. The name is also …

The Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions during the past 12,000 years.

Feb 25, 2025 · Discover interesting facts about volcanoes, including why and where they form and history's deadliest eruption.

Volcano World is a higher education, k-12, and public outreach project of the Oregon Space Grant Consortium administered through the College of Earth, Ocean, and Atmospheric Sciences at …