October 4, Do Now 2. Class Notes 3. Guided Practice 4. Independent Practice 5. Practicing our AIMS: Homework: ES.8 Sedimentary Rocks

Transcription

1 October 4, 2016 Aims: SWBAT describe the formation of sedimentary rocks. SWBAT use the composition of a sedimentary rock to identify the rock and to infer its history of formation. Agenda 1. Do Now 2. Class Notes 3. Guided Practice 4. Independent Practice 5. Practicing our AIMS: Homework: ES.8 Sedimentary Rocks How will you help our class earn all of our S.T.R.I.V.E. Points? 1

2 Aim Check: What do all sedimentary rocks start as? What is stratification? How is a clastic rock formed? 2

3 SCIENCE 8 Sedimentary Rocks ES.8 Name: Date: Homeroom: Earth s Surface OBJECTIVES: By the end of class, students will be able to SWBAT describe the formation of sedimentary rocks. SWBAT use the composition of a sedimentary rock to identify the rock and to infer its history of formation. DO NOW Direction: Read and ANNOTATE the information then, list the facts given in the article. Circle or write the phrase to make a statement correct 1. I am lava, I form (intrusive / extrusive) igneous rocks. 2. I am magma, I form (intrusive / extrusive) igneous rocks. 3. Where are intrusive igneous rocks formed? 4. If an igneous rock cools slowly it will be (fine / coarse) grained. 5. If a big crystal is formed, the igneous rock has cooled (quickly / slowly). 6. Solidify means. 7. As it takes longer to cool, the rock will have a (coarser / finer) texture. 8. Intrusive igneous rocks cool (quicker / slower) than extrusive igneous rocks. 9. Igneous rocks can be found on the surface (and /or ) beneath the surface of the Earth. 10. How do igneous rocks form? Concept Check 3

4 THE Original PARFAIT CLASS NOTES SEDIMENTARY ROCK: There are three processes that lead to sedimentary rock forming: Weathering: Erosion: Deposition: deposits sediment in layers, eventually The most noticeable feature of sedimentary rock is it layers, called STRATA: **One layer is called a A single, horizontal layer of rock is sometimes visible for many miles. 4

5 COMPOSITION OF SEDIMENTARY ROCK Sedimentary rocks can be classified by the way it forms. CLASTIC SEDIMENTARY ROCK: Clastic rocks can be classified by sediment : CHEMICAL SEDIMENTARY ROCK: As rainwater slowly makes its way to the ocean, some of the rock material it passes through. Some of this dissolved material eventually sedimentary rock. that make up chemical 5

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7 ORGANIC SEDIMENTARY ROCK: The remains eventually become Coal is a type of organic sedimentary rock that is formed when decomposed plant material and is changed by increasing heat and pressure. Coral reefs are organic sedimentary rocks made by creatures that are still living! Corals build their own homes from. STRUCTURES OF SEDIMENTARY ROCK Many features indicate the way sedimentary rock is formed. STRATIFICATION: Strata differ from one another depending on the properties of their sediment: 7

8 RIPPLE MARKS: MUD CRACKS: FOSSILS: The mineral parts (shells, bones) are more easily preserved as fossils. Bryozoan: Tiny coral-like creatures. Brachiopods: Ancestors of modern sea shells. Gastropods: Snails and slugs Trilobite: Ancestors of the horseshoe crab Crinoids: Sea lily Cephalopod: Squid-like with a tubular shell. 8

9 GUIDED PRACTICE Directions: Read and ANNOTATE each question before you solve the problem. From the word bank, select the term that best represents the picture provided. Use ICE to support your selection. Start with the phrase It is clear that Organic Sedimentary Rock Clastic Sedimentary Rock Strata Weathering Deposition 9

10 INDEPENDENT PRACTICE Directions: For each key term, explain the big idea to a kindergartener. Then, draw a picture to illustrate the word. Term Concept Picture Clastic Sedimentary Rock Chemical Sedimentary Rock Organic Sedimentary Rock Fossil Strata 10

11 Directions: Read and ANNOTATE each question before you solve the problem. Directions: Support your selection by finding evidence to support your answer OR evidence to support why another is incorrect. Start your explanation with The evidence shows that Question 1. A sedimentary rock is formed when fragments are cemented together. Supporting evidence A. Chemical B. Clastic C. Organic D. Igneous 2. A sedimentary rock has fossils in it. A. Chemical B. Clastic C. Organic D. Igneous 3. Chemical sedimentary rocks are formed when particles precipitate out of a. A. Strata B. Fossil C. Solution D. Cementation 4. The different layers of a rock formation are called A. Strata B. Fossils C. Solutions D. Cementation 5. A sedimentary rock usually has a crystalline structu A. Chemical B. Clastic C. Organic D. Igneous 11

12 Directions: Identify each statement as True or False. If the statement is false, correct the underlined word so that it is true. 1. Strata are remains of ancient plants and animals. 2. Sedimentary rocks are formed when sediments are compacted under other sediments. 3. Chemical sedimentary rocks are formed when small rocks and Fragments are cemented together. 4. Clastic sedimentary rocks are formed when sediments come out of a solution. 5. Strata refers to layers of rocks. Directions: Classify each of the sedimentary rocks described. Use ICE to support your conclusion. Start with the phrase I can conclude that 1. A sedimentary rock with crystals is found. 2. A sedimentary rock with different sizes of fragments is found. 3. A sedimentary rock with trilobites in its strata. Directions: Use ICE to support your conclusion. Start with the phrase The evidence shows that 4. Ms. Kramer finds a sedimentary rock with ripple marks in her backyard, what could she infer about what her backyard s environment was like thousands of years ago? 12

13 BEAST MODE: Review! Directions: Read and ANNOTATE each question before you solve the problem. Directions: Use the Mineral Properties Chart to answer the questions that follow. Mineral Properties Chart Cleavage Mineral Common Colors Luster Hardness Streak /Fracture Special Properties Rhodonite Pink, rose red, red brown, brown Glassy white Perfect cleavage Magnetite Black Metallic to submetallic Black Fracture Strongly magnetic Silver Silvery white Metallic Silvery white Fracture Fluorite Colorless, blue, green, purple, yellow, red, black Glassy 4 white Perfect cleavage Diamond Colorless to Black Glassy 10 None 4 directions or cleavage Sulfur Yellow Nonmetallic White fracture Calcite Colorless or white to tan or grey Glassy 3 White Fracture Fizzes in acid to form Carbon Dioxide 1. Which of these minerals would be easiest to identify using the property streak? 2. Which mineral is the hardest on Moh s Scale of Hardness? 3. Which element would be easiest to identify using the property luster? 4. I am a mineral. I have a different color in regular form and powder form. You can easily scratch me with a fingernail (2.5) and I break unevenly. Which mineral am I? 13

14 Science 8 Name: SKILL SNAPSHOT Date: Homeroom: ES.8: Sedimentary Rocks Quick Notes: Like A Scholar? Yes No Redo? Yes No Read and ANNOTATE each question before you solve the problem. Directions: Support your selection by finding evidence to support your answer OR evidence to support why another is incorrect. Start your explanation with The evidence shows that Question 1. A rock is found with organic matter in it. Which type of sedimentary rock is it? Supporting evidence A. chemical B. clastic C. organic D. igneous 2. Water can seep into cracks in rocks and freezes. Ice has a larger volume than water and forces the rock to break apart into smaller pieces. This is an example of A. uplift B. weathering C. erosion D. deposition 3. A rock is found with layers of different sediments. These laye are called A. strata B. fossil C. solution D. cementation 4. Chemical sedimentary rocks are formed when particles leave a A. strata B. fossils C. solutions D. cementation 14

15 Directions: Read the scenarios below. Classify the type of rock described. Use ICE to support your conclusion. Start with the phrase It is clear that 5. Mr. Baird is visiting Oxford s Perrer Park near Miami University. He finds a large rock with trilobites, brachiopods, and crinoids in it. Classify the type of rock he has found. Claim (1/2 pt.) Evidence (1 pt.) Error Free (1/2 pt.) Correct conclusion Relevant Evidence Complete Sentence Punctuation Capitalization Clarity 6. Dr. Brennan is taking a pottery class and is using clay to make a vase. Classify the type of sedimentary rock she is using in her class. CONCEPT CHECK Claim (1/2 pt.) Evidence (1 pt.) Error Free (1/2 pt.) Correct conclusion Relevant Evidence Complete Sentence Punctuation Capitalization Clarity 15