<P> Magma ( from Ancient Greek μάγμα ( mágma ) meaning `` thick unguent '' ) is a mixture of molten or semi-molten rock , volatiles and solids that is found beneath the surface of the Earth , and is expected to exist on other terrestrial planets and some natural satellites . Besides molten rock , magma may also contain suspended crystals , dissolved gas and sometimes gas bubbles . Magma often collects in magma chambers that may feed a volcano or solidify underground to form an intrusion . Magma is capable of intruding into adjacent rocks ( forming igneous dikes and sills ) , extrusion onto the surface as lava , and explosive ejection as tephra , or fragmented rock , to form pyroclastic rock . </P>
<P> Magma ( from Ancient Greek μάγμα ( mágma ) meaning `` thick unguent '' ) is a mixture of molten or semi-molten rock , volatiles and solids that is found beneath the surface of the Earth , and is expected to exist on other terrestrial planets and some natural satellites . Besides molten rock , magma may also contain suspended crystals , dissolved gas and sometimes gas bubbles . Magma often collects in magma chambers that may feed a volcano or solidify underground to form an intrusion . Magma is capable of intruding into adjacent rocks ( forming igneous dikes and sills ) , extrusion onto the surface as lava , and explosive ejection as tephra , or fragmented rock , to form pyroclastic rock . </P>
what is melted rock ( magma ) called when it reaches the earth 's surface
what is melted rock ( magma ) called when it reaches the earth 's surface
lava
lava