Lava

Molten rock expelled by a volcano.

magma

Lava is molten rock expelled by a volcano or fissure. It can be found on the Earth's surface, or within a magma chamber.

/ˈlɑːvə/

The word 'lava' comes from the Italian word for molten rock, derived from the name of a region in Sicily.

Lava is hot, melted rock that flows out of volcanoes like a really big, fiery river.

Lava flows can travel at different speeds, from slow-moving trickles to fast-flowing rivers
Lava cools and hardens into igneous rock like basalt or obsidian
Some lava flows contain trapped gases that create bubbly textures

molten rock

igneous rock molten material

pahoehoe aa block lava

pyroclastic material vesicles

volcano Earth's crust

geological feature natural phenomenon