Volcanic activity refers to the processes and events that involve the eruption of molten rock, known as magma, from beneath the Earth's crust. This activity can create volcanoes, where magma reaches the surface and becomes lava, ash, and gas. Volcanic activity can also include smaller events like steam vents and geysers. These eruptions can shape landscapes, create new land, and even affect the climate. For GCSE chemistry students, understanding volcanic activity is important because it involves studying the movement of elements and compounds from inside the Earth to the surface, and how these materials react with the atmosphere.
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