This document provides information about volcanoes. It defines a volcano as a vent or chimney that connects molten rock from within the Earth's crust to the surface. Volcanoes form cone shapes and erupt when magma and gases find a way to escape through the vent. The document describes the different types of volcanoes as active, dormant, or extinct based on recent eruption patterns. It also provides examples of volcanoes that fit each type and defines key terms related to volcanic features and eruptions.