Question

Explain what causes a volcanic eruption in your own words?

Answer 1

When enough magma builds up in the magma chamber, it forces its way up to the surface and erupts, often causing volcanic eruptions. In the ocean, volcanoes erupt along cracks that are opened in the ocean floor by the spreading of two plates called a mid-ocean ridge .

Answer 2

A volcanic eruption is caused by magma rising through cracks or weaknesses in the Earth's crust. When the pressure is released, as a result of plate movement, magma reaches and explodes onto to the surface causing a volcanic eruption and resulting in lava.