Magma

The video tutorial explains that magma is melted rock beneath the Earth's surface. Its viscosity varies based on composition and temperature, typically ranging from 700 to 1300 °C. When magma reaches the Earth's surface, it becomes lava, often occurring at plate boundaries and hot spots.

What do we call magma when it reaches the surface of the earth?

Where does magma typically occur in relation to tectonic plates?