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.

Lava is made up of crystals, volcanic glass, and bubbles (volcanic gases). As magma gets closer to the surface and cools, it begins to crystallize minerals like olivine and form bubbles of volcanic gases.

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.

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.

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.

Everything in the path of an advancing lava flow will be knocked over, surrounded, buried, or ignited by the extremely hot temperature of lava. When lava erupts beneath a glacier or flows over snow and …

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.

Jun 16, 2025 · What is Lava? A Molten Revelation Lava is molten rock that has erupted onto the Earth’s surface (or the surface of another planet or moon). This extrusive igneous rock, distinguished from …

Lava is magma, hot molten rock that flows through holes in the Earth's crust and onto the surface. Like magma, lava can be either viscous (~thick) or fluid (~thin). [1]