Question

How Volcanoes erupt??​

Answer 1

Answer: The magma deep within the earth rises up and gets collected in the magma chambers. During this some magma is pushed towards vents and the fissures to the earth's surface.

Answer 2

Volcanoes erupt when molten rock called magma rises to the surface. ... As the magma rises, bubbles of gas form inside it. Runny magma erupts through openings or vents in the earth's crust before flowing onto its surface as lava. If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises.