Question

Explain where the melted rock from a volcano comes from??

Answer 1

Volcanoes -- Melting Rocks. Most magma that reaches the surface in volcanic eruptions comes from a part of Earth's mantle called the asthenosphere. ... Turning this solid rock into liquid magma means changing its temperature, pressure, and water content.

Answer 2

They are comes from the core of the earth which are formed due to very high pressure and temperature when a volcano erupts it comes out in the form of lava which then turn into rocks after cooling.