What happens when a volcano erupts Wikipedia?
Beside this, what happens when a volcano erupts?
Once there's enough molten rock — called magma — and enough pressure on it, a volcanic eruption occurs. In many volcanoes, the magma rises up through a central tube or "throat," and emerges out the top of the mountain. In other places, lava, gases and ash flow out through vents.
One may also ask, what does a volcano look like when it erupts? LAVA - Lava is the liquid rock (magma) that flows out of a volcano. Lava glows red hot to white hot as it flows. ACTIVE VOLCANO - An active volcano is one that erupts regularly. ASH - Ash are very small fragments of lava or rock blasted into the air by volcanic explosions.
Also know, how does a volcano erupt simple explanation?
Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. 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.
What is volcanic eruption and its causes?
Volcanoes are formed by eruptions of lava and ash when magma rises through cracks or weak-spots in the Earth's crust. A build up of pressure in the earth is released, by things such as a plate movement which forces molten rock to exploded into the air causing a volcanic eruption.