Aug 1, 2012 · How Do Volcanoes Work? A volcano forms when pressure, temperature, and other natural forces push magma out of a magma chamber (a large, underground pool of liquid rock) …

Sep 29, 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. The term volcano can also refer …

Volcanoes erupt at mid-ocean ridges, such as the Mid-Atlantic ridge, where seafloor spreading creates new seafloor in the rift valleys. Where a hotspot is located along the ridge, such as at …

Many mountains form by folding, faulting, uplift, and erosion of the Earth's crust. Volcanic terrain, however, is built by the slow accumulation of erupted lava. The vent may be visible as a small …

This section looks at the relationship between plate tectonics, earthquakes and volcanoes, which helps to explain how volcanoes form.

Volcanoes form when magma from within the Earth’s mantle rises to the surface. This can occur through tectonic plate movement, hotspots, or other geological processes.

Volcanic mountains are formed when lava erupts on to the Earth's surface then cools and solidifies. In this article you can learn about: How a volcanic mountain is formed What causes a...

Volcanoes are vents, or openings in Earth's crust, that release ash, gases and steam, and hot liquid rock called lava. When the lava cools and hardens, it forms into the cone-shaped …

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 …

HOW VOLCANOES WORK HOME PAGE ERUPTION DYNAMICS Environments Controls Variability Eruption model TEST YOURSELF VOLCANIC LANDFORMS Volcano types Scoria …