During a volcanic eruption, molten rock called magma rises from deep within the Earth and forces its way to the surface. Once exposed to the lower pressure at the surface, the magma erupts as lava, ash, and volcanic gases. This can lead to various volcanic activities such as explosive eruptions, lava flows, pyroclastic flows, ash clouds, and the release of gases like sulfur dioxide. The specific events during a volcanic eruption depend on factors such as the type of volcano and the characteristics of the magma involved.
