Magma movement refers to the flow of molten rock beneath the Earth's surface. This movement occurs due to the heat generated by the Earth's core, which causes the magma to rise through cracks and fissures in the Earth's crust. As magma ascends, it can accumulate in underground chambers, leading to increased pressure. When the pressure becomes too great, the magma can erupt through the surface, resulting in a volcano. The type of eruption depends on the composition of the magma, which can vary in viscosity and gas content. Understanding magma movement is essential for predicting volcanic activity and mitigating hazards.