How does a volcano errupt?

Answer 1

The plate will move towards the volcano ,and then is forced enderneith, the plates rub together causing earthquakes, friction and heat from mantle melts rock . volcanic erruption. i think this is rite, this is what my geograohy teacher taught me anyway .

ashleigh 14 x

Answer 2

The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. These plates sometimes move.

Between the Earth's crust and the mantle is a substance called magma which is made of rock and gases.

When two plates collide, one section slides on top of the other, the one beneath is pushed down. Magma is squeezed up between two plates.

Answer 3

A volcano erupts when pressure from magma beneath the Earth's surface forces it to reach the surface through a vent or opening. The eruption can involve the release of lava, ash, gases, and volcanic rocks. Factors that contribute to volcanic eruptions include the amount of gas in the magma, the viscosity of the magma, and the presence of water.