How does volcano's lava comes out of the volcano? Someone plz tell
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Magma is liquid rock in between the crust and the mantle, formed when part of the lower crust or upper mantle melts. When magma travels up through a volcano's vent, bubbles of gas also appear. All the gas builds up pressure, which causes the magma to explode out of the volcano.
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Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface. Magma that has erupted is called lava. ... When this type of magma erupts, it flows out of the volcano
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