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Download Volcanic Eruptions - During an eruption, molten rock, or magma, is
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Volcanic Eruptions - During an eruption, molten rock, or magma, is forced to the Earth’s surface - Magma that flows onto the Earth’s surface is called lava Volcanoes – are areas of Earth’s surface through which magma and volcanic gases pass Magma chamber – is a body of molten rock deep underground that feeds a volcano Vents – the cracks in the Earth’s crust through which volcanic material passes - If the water content of magma is high, an explosive eruption is more likely - Magma that has a high silica content also tends to cause explosive eruptions - Pyroclastic material forms when magma is blasted into the air and hardens - Pyroclastic flows are produced when enormous amounts of hot ash, dust, and gases are ejected from a volcano