Complete the Words

Volcanoes are geological landforms created when molten rock, ash, and gas escape from beneath the Earth's surface. process often at boundaries of plates, where either move apart collide. Magma, is less dense than the rock, rises and collects in a chamber below the . Eventually, the pressure becomes too great, causing a volcanic eruption through a vent or opening. Over time, layers of cooled lava and ash build up to form the familiar cone shape.