Magma is a molten rock material that is found beneath the Earth's surface. It is composed of a mixture of liquid rock, crystals, and dissolved gases. When magma reaches the Earth's surface, it erupts as lava during volcanic activity. Magma can vary in composition, temperature, and viscosity, affecting how it behaves during an eruption and what types of volcanic rocks it will form as it cools and solidifies. In geological terms, magma is essential for the formation of igneous rocks and plays a crucial role in the rock cycle.
Magma definition
1 answer