Magma Movement: Volcanic eruptions occur when molten rock, called magma, rises to the surface. The composition of magma (silica content, temperature, and gas content) determines the type of eruption. Volcanic Hazards: Volcanic eruptions can pose numerous hazards, including lava flows, pyroclastic flows (hot gas and ash), volcanic ash clouds that disrupt air travel, and volcanic tsunamis triggered by underwater eruptions. Volcanic Explosivity Index (VEI): The VEI is a scale that measures the expl

The health side effects of volcano eruptions