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Bookmark or Share- Lava Science | Ask An Earth and Space ScientistThe glowing red-orange material is molten rock from deep below the Earth’s surface. When it erupts and flows on the surface, it is known as lava. When lava flows, it creates interesting and sometimes chaotic textures on its surface. These textures let us learn a bit about the lava.
- Lava - WikipediaLava flow speeds vary based primarily on viscosity and slope. In general, lava flows slowly, with typical speeds for Hawaiian basaltic flows of 0.40 km/h (0.25 mph) and maximum speeds of 10 to 48 km/h (6 to 30 mph) on steep slopes.
- Volcanic Hazards | Lava Flows, Lahars, Gases, PyroclasticsBecause lava flows are extremely hot - between 1,000-2,000°C (1,800 - 3,600° F) - they can cause severe burns and often burn down vegetation and structures. Lava flowing from a vent also creates enormous amounts of pressure, which can crush or bury whatever survives being burned.
- Lava flows destroy everything in their path | U.S. Geological SurveyLava flow ignites and burns a building near Kalapana, Hawaii. 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 ice, meltwater from the ice and snow can result in far-reaching lahars.
- How Volcanoes Work - lava flow featuresLAVA FLOW FEATURES. SIMPLE AND COMPOUND LAVA FLOWS. The single most important factor on the form of a lava flow is probably the effusion rate, or rate of discharge, measured in cubic meters per second. The higher the effusion rate, the greater the distance traveled before cooling lowers the viscosity and impedes flow.
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