CHAPTER NEW CHAPTER Rocks the BIG idea Rocks change into other rocks over time. 3.1 The rock cycle shows how rocks change. 3.2 Igneous rocks form from molten rock. 3.3 Sedimentary rocks form from earlier rocks. 3.4 Metamorphic rocks form as existing rocks change. CHAPTER OUTLINE CHAPTER RESOURCES 3.1 CHAPTER HOME KEY CONCEPT The rock cycle shows how rocks change. Processes at Earth's surface and heat within Earth cause rocks to change into other types of rocks. VOCABULARY rock rock cycle sediment igneous rock sedimentary rock metamorphic metamorphic rock igneous sedimentary magma CHAPTER RESOURCES SECTION OUTLINE 3.1 KEY CONCEPT CHAPTER HOME The rock cycle shows how rocks change. Processes at Earth's surface and heat within Earth cause rocks to change into other types of rocks. VOCABULARY rock rock cycle igneous rock VISUALIZATION CLASSZONE.COM Explore how rocks form and change. sedimentary rock metamorphic rock CHAPTER RESOURCES SECTION OUTLINE 3.2 CHAPTER HOME KEY CONCEPT Igneous rocks form from molten rock. As molten rock cools, minerals crystallize and form igneous rocks. VOCABULARY intrusive igneous rock extrusive igneous rock igneous CHAPTER RESOURCES SECTION OUTLINE 3.2 CHAPTER HOME KEY CONCEPT Igneous rocks form from molten rock. As molten rock cools, minerals crystallize and form igneous rocks. Extrusive igneous rocks cool quickly at Earth's surface. VOCABULARY intrusive igneous rock extrusive igneous rock Intrusive igneous rocks cool slowly within Earth. VISUALIZATION CLASSZONE.COM Explore an animation showing how crystals form as molten rock cools. CHAPTER RESOURCES SECTION OUTLINE 3.3 CHAPTER HOME KEY CONCEPT Sedimentary rocks form from earlier rocks. Layers of sedimentary rocks form as VOCABULARY sediment • sediments are pressed or cemented together CHAPTER RESOURCES SECTION OUTLINE 3.3 CHAPTER HOME KEY CONCEPT Sedimentary rocks form from earlier rocks. Layers of sedimentary rocks form as VOCABULARY sediment • sediments are pressed or cemented together • dissolved minerals re-form as water evaporates CHAPTER RESOURCES SECTION OUTLINE 3.4 CHAPTER HOME KEY CONCEPT Metamorphic rocks form as existing rocks change. Metamorphic rocks form as the structure of the parent rocks change and as their minerals recrystallize. VOCABULARY metamorphism recrystallization foliation heat and pressure shale schist CHAPTER RESOURCES SECTION OUTLINE 3.1 KEY CONCEPT CHAPTER HOME The rock cycle shows how rocks change. I. The rock cycle shows how rocks change. VOCABULARY rock A. Most rocks are made of minerals. rock cycle B. Our world is built of rocks. igneous rock C. Rocks change as they move through the rock cycle. 1. Rock Types sedimentary rock metamorphic rock 2. Rocks in the Crust CHAPTER RESOURCES KEY CONCEPT SUMMARY 3.2 KEY CONCEPT CHAPTER HOME Igneous rocks form from molten rock. II. Igneous rocks form from molten rock. A. Magma and lava form different types of igneous rocks. 1. Origin of Igneous Rocks VOCABULARY intrusive igneous rock extrusive igneous rock 2. Textures of Igneous Rocks 3. Composition of Igneous Rocks B. Igneous rocks make long-lasting landforms. 1. Intrusive Rock Formations 2. Extrusive Rock Formations CHAPTER RESOURCES KEY CONCEPT SUMMARY 3.3 CHAPTER HOME KEY CONCEPT Sedimentary rocks form from earlier rocks. III. Sedimentary rocks form from earlier rocks. VOCABULARY sediment A. Some rocks form from rock particles. 1. Forming and Transporting Rock Particles 2. Forming Loose Sediment into Rocks B. Some rocks form from plants or shells. 1. Coal 2. Limestone C. Some rocks form when dissolved minerals re-form from water. D. Sedimentary rocks show the action of wind and water. CHAPTER RESOURCES KEY CONCEPT SUMMARY 3.4 CHAPTER HOME KEY CONCEPT Metamorphic rocks form as existing rocks change. IV. Metamorphic rocks form as existing rocks change. VOCABULARY metamorphism A. Heat and pressure change rocks. B. Metamorphic changes occur over large and small areas. recrystallization foliation 1. Change over Large Areas 2. Change over Small Areas C. Most metamorphic rocks develop bands of minerals. 1. Foliated Rocks 2. Nonfoliated Rocks CHAPTER RESOURCES KEY CONCEPT SUMMARY CHAPTER HOME Chapter Resources Image Gallery Click here to view chapter images and animations Click on the items below to access resources on Audio Readings Resource Centers Hear chapter audio readings Get more information on select science topics Content Review Standardized Test Practice Review key concepts and vocabulary 4 % CE 7 1 0 2 6 5 4 3 9 8 3 2 . Math Tutorial M+ M– M CC ON/C 5 1 CLASSZONE.COM Review math concepts BACK TO CHAPTER Practice state standardized tests