lava

Molten rock from volcanoes is called lava.

You might hear about lava when watching news about volcanic eruptions. The word "lava" is often used to describe the hot, melted rock that flows out of a volcano during an eruption. Imagine being close to an erupting volcano - you'd see a river of glowing red-orange liquid pouring down the mountain. Scientists and volcanologists are interested in lava because it helps them understand what's happening inside the volcano and how it might affect people living nearby.