This document provides information about volcanoes through expository nonfiction. It defines key terms like volcanoes, lava, earthquakes, and chimney. It explains that volcanoes are hills or mountains built up by lava and ash around an opening in Earth's crust. Beneath the surface, tectonic plates collide with great force, causing earthquakes that can make the ground tremble and tall buildings fall. When volcanoes erupt, they shoot lava from their openings like a fireworks display.