Exploremos las rocas metamórficas (Exploring Metamorphic Rocks)

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock''s chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.