How do volcanoes form?

Deep inside 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, volcanoes erupt.
地球內部深處，在表面熔化的鐵質核心和薄地殼之間，有一個堅實的身體稱為地幔的岩石。當來自地幔的岩石融化，移動到的通過地殼表面，並釋放被壓抑的氣體，火山爆發。



Extremely high temperature and pressure cause the rock to melt and become liquid rock or magma. When a large body of magma has formed, it rises thorugh the denser rock layers toward Earth's surface.  Magma that has reached the surface is called lava.
極高的溫度和壓力導致岩石熔化變成液體岩石或岩漿。當大量的岩漿形成之後會向上擠壓至地球表面的岩石層。擠出表面的岩漿被稱為熔岩。