a convection current
Magma
When lava is underground, it is called magma. Magma is molten rock beneath the Earth's surface that can eventually erupt onto the surface as lava during a volcanic eruption.
The melted mineral material in the mantle is called magma.
A hardened layer of magma is called a lava flow or volcanic rock.
Melted material that rises from the mantle is called magma. Once magma reaches the Earth's surface, it is then referred to as lava.
A rock cycle starts off as magma. Then as the magma cools, crystals form, and eventually the magma solidify into igneous rocks. The process breaks down into sedimentary rocks. The processes change a pre-existing igneous or sedimentary rock into a new rock called metamorphic rocks, then it melts into magma and the process starts all over.
Before lava reaches the surface it is called magma.
This is called the magma chamber.
Magma
Molten rock under the surface is called "magma". When magma reaches the surface it is called "lava".
Magma
It's called magma when it is under the earth's surface. Once it erupts or becomes visible on the surface, its called lava
It's called lava. Magma is formed in the magma chamber, then later when the volcano erupts, it turns to lava.
When lava is underground, it is called magma. Magma is molten rock beneath the Earth's surface that can eventually erupt onto the surface as lava during a volcanic eruption.
Igneous rock
Magma forms through the process of partial melting of rocks in the Earth's mantle. This can occur due to the intense heat and pressure in the mantle, causing certain minerals within the rocks to melt and form magma.
Magma is liquid rock before it reaches the surface magma which reaches the surface is called lava.