how do volcanoes erupt?

6:22:53

2023-03-18

1286

Deep inside the Earth, between the molten iron core and the thin crust at the surface, there is a solid body of rock called the mantle. When rock from the mantle melts, moves to the surface through the crust, and releases pent-up gases, the volcano erupts.

Extremely high temperatures and pressure cause the rock to melt and become liquid rock or magma. When a large body of magma has formed, it rises through the denser rock layers toward Earths surface. Magma that has reached the surface is called lava.

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