Lava is molten or partially molten rock that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at

Jan 19, 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. The temperatures of molten lava range from about 700 to 1,200 °C (1,300 to 2,200 °F).

Jan 28, 2025 · Fountains on the north side are 100 to 120 feet (30 to 40 meters) high and feeding multiple lava streams, the observatory said. A small fountain can be seen in the south side with a small lava flow emerging, the observatory said. Each episode since Dec. 23 has continued for 13 hours to eight days, the observatory said.

Oct 26, 2022 · Learn about the types of lava including the forms of lava flow (pahoehoe and a'a) and the chemical composition based on silica content.

Jun 11, 2018 · lava Molten rock or magma that reaches the Earth's surface and flows out through a volcanic vent in streams or sheets. There are three main types of lava: vesicular, such as pumice; glassy, such as obsidian; and even-grained. Chemically, lavas range from acidic to ultrabasic. Basic lavas have a low viscosity and flow easily, covering large areas.

Mar 28, 2024 · What is Lava? A Molten Journey from Earth’s Depths. Lava, that mesmerizing and sometimes terrifying display of nature’s raw power, is often conflated with magma. While they are intimately related, they are not one and the same.

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. How to use lava in a sentence.

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] Blocky lava is so thick and slow that it barely moves along the ground. Other types of lava, like pahoehoe, aa, and pillow lava, are thinner and flow faster. [1]

Lava, with its intense heat and unstoppable flow, reminds us of our planet’s dynamic nature and the powerful forces beneath our feet. Its ability to destroy, create, and transform is unparalleled, shaping the physical landscape and the biological communities that thrive in its aftermath.

May 1, 2024 · When magma flows or erupts onto Earth’s surface, it is called lava. Like solid rock, magma is a mixture of minerals. It also contains small amounts of dissolved gases such as water vapor, carbon dioxide, and sulfur .