how volcanoes form video?
How are volcanoes formed BBC?
Volcanoes form when magma , which is molten rock from beneath the Earth's crust, reaches the surface. The magma erupts to form lava . ... As the oceanic crust sinks into the mantle it creates magma, which rises to form a volcano.
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How do volcanoes form step by step?
A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.
Full answer in: www.onegeology.org
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Where does a volcano form?
Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.” Feb 26, 2021
Full answer in: oceanservice.noaa.gov
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