A lava flow is an outpouring of lava during an effusive eruption. (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows.)

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Jun 12, 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 · Learn the difference between magma and lava and explore their temperature, composition, and ability to form rocks.

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 11, 2018 · lava Molten rock, normally a silicate, erupted by a volcano. It may be vesicular, glassy, or porphyritic in texture, and varies between acidic and basic in composition.

May 1, 2024 · Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface. When magma flows onto Earth’s surface, it is called lava.

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Jan 10, 2025 · The surface of lava can appear smooth, rough, jagged, and sometimes like a pile of construction rubble. What are the stories behind these surface features and how did they …

Apr 24, 2017 · The molten rock released during an eruption is referred to as lava, which rapidly cools and crystallizes to form igneous rocks. Lava rocks are a type of igneous rock known as …