The solid volcanic rock resulting from subsequent cooling of the molten material is often also called lava. A lava flow is an outpouring of lava during an effusive eruption. (An explosive eruption, by contrast, …

Jan 5, 2026 · Lava, magma (molten rock) emerging as a liquid onto Earth’s surface. The term ‘lava’ is also used for the solidified rock formed by the cooling of a molten lava flow.

2 days ago · Why does the Earth have lava in the middle? – Nora, 6, Florida Dear Nora, I live near a few volcanoes. One of them—Mount St. Helens—is bubbling with molten material that will probably gush …

The hardened formation is called " lava flow," whereas the material that still contains molten rock is called an " active lava flow." The rock formed from solidified lava (or magma) is called igneous rock.

Jun 16, 2025 · Lava is primarily composed of silicate minerals, but its exact composition varies depending on the source magma. The most common type of lava is basaltic lava, characterized by …

What Is Lava Made Of? Looking down at a cooled lava flow, you see a black, glassy, vesicular (“spongy”) rock. The black color comes from the magnesium and iron-rich minerals, which are …

Jul 20, 2023 · When a volcano erupts, the molten rock that comes out of the Earth is called lava. Lava is so hot, it remains molten and flows until it cools and hardens into rock.

The meaning of LAVA is molten rock that issues from a volcano or from a fissure in the surface of a planet (such as earth) or moon; also : such rock that has cooled and hardened.

Learn about lava, the molten rock that erupts from volcanoes and its types, formation process, and the transformative impact it has on Earth's surface and ecosystems.

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