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 …

Oct 8, 2025 · 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.

Aug 6, 2023 · Lava: Once magma reaches the Earth’s surface and begins to flow, it is termed lava. The emergence happens through volcanic eruptions or fissures. In addition to location, …

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 …

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 …

Jun 16, 2025 · 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 magma (molten rock …

At its core, lava is molten rock expelled by a volcano during an eruption. It originates deep within the earth, where temperatures are high enough to melt rock. When pressure builds up in the …

Lava is a natural geological phenomenon that has shaped many islands around the world, such as the Canary Islands, with continuous volcanic eruptions and lava discharges for thousands …

Hawaii's Kilauea volcano keeps erupting with syrupy lava flows, serving as a fiery reminder of nature's destructive power. But as the ongoing eruption captures headlines, a question might …

Mar 25, 2009 · About 30 km beneath the Earth's crust is the mantle; a vast region of hot rock that can be thousands of degrees. Although the mantle is mostly solid, it can form pockets of liquid …