A hot spot is a region deep within the Earth's mantle from which heat rises through the process of convection. This heat facilitates the melting of rock. The melted rock, known as magma, often pushes through cracks in the crust to form volcanoes.
The space for the magma to leave is very small and, as it travels, pressure builds, meaning it escapes violently when released. This escaping liquid rock becomes lava, which solidifies as it travels. Layers of lava build up over time, creating volcanoes.
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A hot spot is a region deep within the Earth's mantle from which heat rises through the process of convection. This heat facilitates the melting of rock. The melted rock, known as magma, often pushes through cracks in the crust to form volcanoes.
The space for the magma to leave is very small and, as it travels, pressure builds, meaning it escapes violently when released. This escaping liquid rock becomes lava, which solidifies as it travels. Layers of lava build up over time, creating volcanoes.