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3.1 The Rock Cycle
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Rocks are solids made of one or more minerals There are three types of rocks: 1. Igneous 2. Sedimentary 3. Metamorphic Together they made up the study of GEOLOGY How do these connect to Earth and Space Science? BIG IDEA
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They occupy 5/6 of the Earth’s Volume They make up 2/3 of the Earth’s Mass The oldest rocks are meteorites They are 4.5 billion years old SPACE AND TIME
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The three types of rocks are INTERCONNECTED through the ROCK CYCLE FORCES AND MOTION
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The appearance of a rock is affected by several factors: What elements it’s made from Rate of cooling They way it’s compacted Amount of Heat and Pressure Exposure to types of hot fluids Matter and Energy
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Rocks are like TIME MACHINES! By analyzing their characteristics we can learn about conditions that existed on Earth long ago. Earth as a System
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James Bond Island, in Phuket, Thailand https://www.youtube.com/watch?v =sUscvHqHkmg https://www.youtube.com/watch?v =sUscvHqHkmg Rocks are so cool they make it into famous movies!
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Find a cool rock from anywhere in the world 1.Write the name 2.Where in the world it is 3.Include a picture 4.What include the type of rock it is (igneous, sedimentary, or metamorphic) ePortfolio: This will be your artifact for the class. Your Task
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https://www.youtube.com/watch?v=d68yRIE9OvQ https://www.youtube.com/watch?v=d68yRIE9OvQ Back to the future, 2015?
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Rocks = COOL TIME MACHINES In conclusion…
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1.2. 3.1 The Rock Cycle
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A rock is a solid mass of mineral or mineral-like matter that occurs naturally as part of our planet Three types of rock are: 1. 2. 3. Definition
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When the systems interact, they cause rocks to change from one type to another. This is called the Rock Cycle System Interactions
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Rock Brothers Rock Brothers https://www.youtube.com/watch?v=9lyCYXXIHT0 https://www.youtube.com/watch?v=9lyCYXXIHT0 Video and Worksheet
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Using the textbook (pg. 67) re-create the rock cycle Show all the connections that can be made from one part of the rock cycle to the other When finished, answer this question: Question: Can a sedimentary rock become an igneous rock without changing first to a metamorphic rock? Explain Putting the Rock Cycle Together
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1. What enables rocks to take alternate paths 2. Where does the energy that powers The Rock Cycle come from? ePortfolio work: 1. Upload your image of the Rock Cycle 2. Two questions from 3.1 Exceeding Questions
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1. What are the three types of rocks? 2. Place the rocks in the correct order in the rock cycle 3. What are the two types of Igneous Rocks? https://www.youtube.com/watch?v=8MYAFfeNO0 0 https://www.youtube.com/watch?v=8MYAFfeNO0 0 3.1 Review
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Goals for the class: 1. Compare Extrusive and Intrusive Igneous Rocks 2. Demonstrate how the rate of cooling affects and igneous rock’s texture 3. Classify Igneous rocks according to texture and composition 3.2 Igneous Rocks
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INSTRUSIVEEXTRUSIVE Definition: Rocks that form from magma that form underneath the earth’s surface Intrude means: Forced into an existing rock How they form: As magma rises, it cools, allowing elements to combine and form minerals Example: Granite Definition: Lava cools down and hardens Extrude means: Forced out How they form: Magma reaches the earth’s surface as lava, cools, and hardens Example: Rhyolite Goal 1: Comparing Igneous Rocks Page 71 of the Textbook Read about Intrusive and Extrusive Igneous Rocks and complete The table. Use the heading as a guide.
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As Magma rises from the depths underground, it cools As it cools, elements combine and form minerals These minerals grow in size and become a solid mass of interlocking crystals. https://www.youtube.com/watch?v=PrN7jygu4cQ https://www.youtube.com/watch?v=PrN7jygu4cQ Goal 2: Rate of cooling in Igneous Rocks EXTRUSIVE INTRUSIVE
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Extrusive and Intrusive Igneous rocks have different appearances. How can we group them? at: Texture (what it feels like) Composition (what it’s made from) Textures: Coarse-grained, fine-grained, glassy, porphyritic Compositions: Granitic, Basaltic, Andesitic, Ultramafic Goal 3: Classification
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Use the table provided to describe the different textures and compositions Textbook Reference: Page 71-72 Homework: 3.1, 3.2 ePortfolio Questions Formative Quiz: Sunday That means it does not go on Portal but it let’s me know if you’re doing your work and if you understand the material. Describing Texture and Composition
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Recall the Rock Cycle Write the order of the rocks and any alternate pathways you remember Set this image aside. You will need it to answer a question. Warm Up!
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Recipe to make metamorphic rocks: HEAT and PRESSURE These forces create recrystallization in the minerals that make up the metamorphic rocks. There is a change in shape, texture, and size Metamorphic rocks can be formed from Sedimentary Rocks and Igneous Rocks Question: Which one is an alternate pathway from the rock cycle? 3.4 Metamorphic Rocks
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If they require HEAT and PRESSURE, where do you predict metamorphic rocks are formed? How do they form?
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Contact metamorphism: Magma forces its way into rock. Example: Marble What do you notice about the appearance? Rock Formation
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Regional Metamorphism: As mountains are made over time, large areas as exposed to heat and pressure. Rock Formation
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Agents of Metamorphism 1.Heat 2.Pressure 3. Hydrothermal solutions 1.Heat: Provides energy for the recrystallization. Temperatures range from 150-200 degrees Celsius 2.Pressure: closes any gaps underground. By compacting rocks together it can also cause recrystallization. Heat and Pressure create folding in the rock. 3.Solutions: also contribute to recrystallization because they help move ions (charged elements) They can also dissolve minerals and deposit new ones.
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https://www.youtube.com/watch?v=kWJwJqVDU F8 https://www.youtube.com/watch?v=kWJwJqVDU F8 Video
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Foliated- refers to the texture being layered or banded These types of rocks are formed when many minerals combine under extreme conditions. They are compact and dense Classification-Foliated
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Texture does not have bands or layering These rocks are usually made from ONE mineral Example: Marble. It is only made from calcite. Classification- Nonfoliated
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Foliated or Nonfoliated?
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With the information you have learned this class, summarize the information using a meme of your choice Don’t forget to #hashtag your key words Exit Ticket: MEME
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