Volcanic activity refers to the processes that occur when magma from beneath the Earth's surface escapes to the surface. This can happen through eruptions, where molten rock, ash, and gases are expelled, creating features like volcanoes. These eruptions can vary in intensity, from gentle lava flows to explosive blasts that can affect large areas. The movement of tectonic plates plays a significant role in volcanic activity. When these plates collide or pull apart, they can create conditions for magma to rise. Areas near the Ring of Fire, for example, are known for their frequent eruptions due to the active tectonic boundaries surrounding the Pacific Ocean.