GEOLOGY

Detailed explanation-1: -Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth’s surface.

Detailed explanation-2: -When magma reaches Earth’s surface and erupts from a volcano, it becomes lava.

Detailed explanation-3: -Magma forms from partial melting of mantle rocks. As the rocks move upward (or have water added to them), they start to melt a little bit. These little blebs of melt migrate upward and coalesce into larger volumes that continue to move upward. They may collect in a magma chamber or they may just come straight up.

Detailed explanation-4: -When magma flows or erupts onto Earth’s surface, it is called lava.

Detailed explanation-5: -When magma reaches the surface of the Earth it is called lava. Lava is molten rock that comes through a crack in the Earth’s crust, usually at the site of a volcano or some kind of deep fissure.