Rocks 3.1 The rock cycle shows how rocks change. 3.2 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

3.1 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. rock rock cycle sediment magma sedimentary metamorphic igneous igneous rock sedimentary rock metamorphic rock SECTION OUTLINE

3.1 rock The rock cycle shows how rocks change. A naturally formed solid that is usually made up of one or more types of minerals. igneous rock sedimentary rock metamorphic rock KEY CONCEPT SUMMARY

3.1 rock cycle The rock cycle shows how rocks change. The set of natural, repeating processes that form, change, break down, and re-form rocks. igneous rock sedimentary rock metamorphic rock KEY CONCEPT SUMMARY

3.1 igneous rock The rock cycle shows how rocks change. Rock that forms as molten rock cools and becomes solid. igneous rock sedimentary rock metamorphic rock KEY CONCEPT SUMMARY

3.1 sedimentary rock The rock cycle shows how rocks change. Rock formed as pieces of older rocks and other loose materials get pressed or cemented together or as dissolved minerals re-form and build up in layers. igneous rock sedimentary rock metamorphic rock KEY CONCEPT SUMMARY

3.1 metamorphic rock The rock cycle shows how rocks change. Rock formed as heat or pressure causes existing rock to change in structure, texture, or mineral composition. igneous rock sedimentary rock metamorphic rock KEY CONCEPT SUMMARY

Igneous rocks form from molten rock. 3.2 Igneous rocks form from molten rock. As molten rock cools, minerals crystallize and form igneous rocks. intrusive igneous rock extrusive igneous rock igneous SECTION OUTLINE

Igneous rocks form from molten rock. 3.2 Igneous rocks form from molten rock. As molten rock cools, minerals crystallize and form igneous rocks. intrusive igneous rock extrusive igneous rock Extrusive igneous rocks cool quickly at Earth's surface. Intrusive igneous rocks cool slowly within Earth. SECTION OUTLINE

intrusive igneous rock 3.2 Igneous rocks form from molten rock. intrusive igneous rock intrusive igneous rock extrusive igneous rock Igneous rock that forms as magma cools below Earth’s surface. KEY CONCEPT SUMMARY

extrusive igneous rock 3.2 Igneous rocks form from molten rock. intrusive igneous rock extrusive igneous rock extrusive igneous rock Igneous rock that forms as lava cools on Earth’s surface. KEY CONCEPT SUMMARY

Sedimentary rocks form from earlier rocks. 3.3 Sedimentary rocks form from earlier rocks. Layers of sedimentary rocks form as sediment • sediments are pressed or cemented together SECTION OUTLINE

Sedimentary rocks form from earlier rocks. 3.3 Sedimentary rocks form from earlier rocks. Layers of sedimentary rocks form as sediment • sediments are pressed or cemented together • dissolved minerals re-form as water evaporates SECTION OUTLINE

3.3 sediment Sedimentary rocks form from earlier rocks. Solid materials such as rock fragments, plant and animal remains, or minerals that are carried by water or by air and that settle on the bottom of a body of water or on the ground. KEY CONCEPT SUMMARY

Metamorphic rocks form as existing rocks change. 3.4 Metamorphic rocks form as existing rocks change. Metamorphic rocks form as the structure of the parent rocks change and as their minerals recrystallize. metamorphism recrystallization foliation shale schist heat and pressure Nit-picky, but the green-gray arrow (prior to and proceeding animation) has a line btw the head and tail. Could bring the two portions together so there is no line? (I can’t figure out how to get down to that arrow…) SECTION OUTLINE

3.4 metamorphism Metamorphic rocks form as existing rocks change. recrystallization The process by which a rock’s structure or mineral composition is changed by pressure or heat. foliation KEY CONCEPT SUMMARY

3.4 recrystallization Metamorphic rocks form as existing rocks change. metamorphism recrystallization recrystallization The process by which bonds between atoms in minerals break and re-form in new ways during metamorphism. foliation KEY CONCEPT SUMMARY

3.4 foliation Metamorphic rocks form as existing rocks change. metamorphism foliation recrystallization The arrangement of minerals within rocks into flat or wavy parallel bands; a characteristic of most metamorphic rocks. foliation KEY CONCEPT SUMMARY

3.1 The rock cycle shows how rocks change. I. The rock cycle shows how rocks change. 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. sedimentary rock 1. Rock Types metamorphic rock 2. Rocks in the Crust KEY CONCEPT SUMMARY

Igneous rocks form from molten rock. 3.2 Igneous rocks form from molten rock. II. Igneous rocks form from molten rock. intrusive igneous rock A. Magma and lava form different types of igneous rocks. extrusive igneous rock 1. Origin of Igneous Rocks 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 KEY CONCEPT SUMMARY

Sedimentary rocks form from earlier rocks. 3.3 Sedimentary rocks form from earlier rocks. III. Sedimentary rocks form from earlier rocks. 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. KEY CONCEPT SUMMARY

Metamorphic rocks form as existing rocks change. 3.4 Metamorphic rocks form as existing rocks change. IV. Metamorphic rocks form as existing rocks change. metamorphism A. Heat and pressure change rocks. recrystallization B. Metamorphic changes occur over large and small areas. 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 KEY CONCEPT SUMMARY