Exploremos las rocas ígneas (Exploring Igneous Rocks)

Igneous rocks form when magma from Earth''s core cools as it moves toward Earth''s surface. Most of Earth is made of igneous rock, which is sometimes called "fire rock." Your readers will learn the different kinds of igneous rock, how igneous rocks form, and how igneous rocks fit into the rock cycle. Captivating photographs show readers how beautiful igneous rocks are and fact boxes provide exciting additional information.