1. Types of Rocks LESSON 4.1MIDDLE SCHOOL EARTH SCIENCE UNIT 2 CHAPTER 4

2. Lesson Objectives In this lesson, students connect rock specimens to the rock processes and cycles that form them. By lessons end, students will be able to: Define rock and describe what rocks are made of. Know how rocks are classified and described. Explain how each of the three main rock types areformed. Describe the rock cycle. 3. Standards 3.2.6.A1 Distinguish the differences in properties of solids, liquids, andgases. Differentiate between volume and mass. Investigate that equalvolumes of different substances usually have different masses. 3.2.6.A2 Compare and contrast pure substances with mixtures. 3.2.6.A3 Explain and give examples of how mass is conserved in a closedsystem. 3.2.6.A4 Differentiate between physical changes and chemicalchanges. 4. Note-taking Before you begin to view this PowerPoint and the remainder of the content for this lesson, please open up your note-taking template. It is under the Note-taking Time tab for this lesson. At the end of this lesson, you will submit your notes upon completion on the Lesson Journal. 5. Essential Questions 1. Describe the difference between a rock and a mineral. 2. Why can the minerals in a rock be a clue about how the rockformed? 3. What is the difference between magma and lava? 4. What are the 3 main types of rocks and how does eachform? 5. Describe how an igneous rock can change to a metamorphicrock. 6. Explain how sediments form. 7. In which rock type do you think fossils, which are theremains of past living organisms, are most often found? 8. Suppose that the interior of the Earth was no longerhot, but all other processes on Earth continued unchanged.How would this affect the distribution of rocks formed onEarth? 6. Vocabulary chemical composition Description of the elements orcompounds that make up a substance and how those elements are arranged in the substance. deposited Put down or dropped by water or wind onto the ground. lava Molten rock at the surface of Earth. magma Molten rock below Earths surface. mineral Naturally-occurring solid that has a definite crystalstructure. molten Something that is melted. organic Having to do with living things. precipitates Solid substance that separates out of a liquid; a solidsubstance that was once dissolved in a liquid and gets left behind when the liquid evaporates. sediments Small particles of soil or rock deposited by wind orwater. 7. Types of Rocks You should have already watched the Getting Startedvideo entitled Geology Kitchen: The Three Types of Rocks As mentioned in the video, there are different types of rocksin our environment There are 3 basic rock types; 1. Igneous Rocks 2. Sedimentary Rocks 3. Metamorphic Rocks 8. Igneous Rocks Igneous rocks are formed deep within the Earth. They come from liquid hot magma, that cools and transforms into a solid state. 9. Images of Igneous Rocks 10. Sedimentary Rocks If Igneous rocks form deep within the Earth, thenSedimentary rocks form right at the surface. They are created by the sediment from air, water andchemicals reacting in our physical environment. 11. Images of Sedimentary Rocks 12. Metamorphic Rock Metamorphic rock is formed from altered pre- existing rocks. These rocks are altered by high heat and pressure from deep burial . 13. Images of Metamorphic Rocks 14. Supplemental Learning Assignments As a supplement to this PowerPoint, there are two other learningactivities that I feel will really help you to greater understand the typesof rocks and the rock cycle. The second learning activity is a reading assignment from your EarthScience Middle School textbook. Please read pages 94-100 To access the 1st activity; go tohttp://www.brainpop.com/search/search.weml?keyword=rocks On this site there are two short cartoons entitled;1.Types of Rocks2.Rock Cycle 15. The Rock Cycle