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Minerals, Rocks, and Mineral Resources Name:________________ Highlands Middle School Earth Science: Mr. Babicz Minerals, Rocks, and Mineral Resources Vocabulary Using the word bank below, Topic 11 in your Earth Science workbook, and your glossary found in the back of your workbook, match the words with their correct definitions. Cleavage Contact Metamorphism Extrusive Fossil Fracture Igneous Rock Inorganic Intrusive Luster Magma Metamorphic Rock Mineral Precipitation (Minerals) Regional Metamorphism Rock Cycle Sedimentary Rock The way in which a mineral breaks. Not made by something that at one time was alive. A model that represents how rock changes over the course of time. The process in which rocks come in contact with magma or lava and recrystallize the rock. The way a mineral looks or shine in reflected light. A type of sediment in which dissolved minerals come out of solution to form solids. Rocks that form directly from sediments at or near Earth’s surface. A rock formed by the solidification of lava above Earth’s surface. A rock formed by the solidification of magma or lava. Molten material below Earth’s surface. The formation of metamorphic rocks over large areas due to an increases in heat and pressure. Any physical evidence of former life. A rock formed by extreme amounts of heat and pressure. The tendency of a mineral to break along zones of weakness. A naturally occurring, crystalline solid having a somewhat definite chemical composition. Each has a unique crystal structure which causes its physical and chemical properties. A rock formed by the solidification of magma below Earth’s surface. 1 Minerals A mineral is a _______________ occurring, inorganic, _______________ solid having a definite _______________ composition. Naturally Occurring means that ______________________________________________________ ______________________________________________________________________________ Inorganic means that ______________________________________________________________ ______________________________________________________________________________ Crystalline means that _____________________________________________________________ ______________________________________________________________________________ *Each mineral has its own _______________ crystal structure.* Mineral vs. Rock All minerals are __________. Minerals contain ______________ matter. Think of minerals as the ingredients and rocks as the cookies! Not all rocks are minerals or are composed of minerals. Rocks are _______________ formed, but can contain organic matter. Mineral Properties Color: Usually the most __________, BUT very _______________. o Ex. Sulfur is always yellow. However, quartz can be clear, pink, white, etc. _______________: The way an unweathered minerals surface shines. o Metallic: Shines like metals. o _______________: Looks earthy, waxy, greasy, or pearly. _______________: The color of the powder left behind after the mineral is rubbed on an unglazed porcelain plate. Hardness: A minerals _______________ to being scratched. o __________ Hardness Scale (1-10) Talc = 1 (very soft) Glass = 5.5 2 Diamond = 10 (hardest) Cleavage: The tendency of a mineral to split along one or more smooth, __________ planes. o Minerals that do not have cleavage are said to have _______________. (break unevenly) Some other characteristics include: _______________: Magnetite Reacting to __________: Calcite Tastes Salty: _______________ The most important question about minerals is … **What causes minerals to have different physical characteristics?** ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ All information on minerals can be found on page _____ of the ESRT! Exercise #1 – Workbook Review Questions Directions: 1. Answer questions #1-17 on pages 44-45 in your workbook in the space provided below. 2. Remember to look back at the reading from pages #39-43, your ESRT, and your notes. 1. __________ 7. __________ 13. __________ 2. __________ 8. __________ 14. __________ 3. __________ 9. __________ 15. __________ 4. __________ 10. _________ 16.___________ 5. __________ 11. __________ 17. __________ 6. __________ 12. __________ 3 Exercise #2 – Properties of Common Minerals Practice Complete the chart below. Mineral Name Hardness Cleavage or Fracture Common Colors Distinguishing Characteristics Hematite Halite Calcite Quartz Garnet 1. Nonmetallic luster, color is pink to white, it has cleavage, and its hardness is 6. Name that mineral!!! 2. Metallic luster, color is silver, it has cleavage, its hardness is 2.5, and it’s very dense. Name that mineral!!! 3. Nonmetallic luster, color is white, feels soapy, and its hardness is 1. Name that mineral!!! 4. Metallic luster, color of gold/brass, it fractures not cleaves, and its hardness is 6.5. Name that mineral!! 5. Nonmetallic luster, color is clear, it has cleavage, a salty taste, and its hardness is 2.5. Name that mineral!!! 6. Nonmetallic luster, dark red, it fractures not cleaves, and its hardness is a 7. Name that mineral!!! 4 Rock Identification Exercise #3 – Earth Science… ROCKS!! Stationed around the room are three sets of rocks. You will be given five minutes at each station to examine the rocks. While you are examining the rocks, write down some characteristics that you observe that are common amongst all or several of the rocks in each set. Do this in the space provided below. Rock Set #1 ___________________ Rock Set #2 ___________________ Rock Set #3 _____________________ a. a. a. b. b. b. c. c. c. d. d. d. Rocks are classified into three categories based on their ______________________. – _______________ – _______________ – _______________ Each group is distinguished and identified based on ___________________ and ____________________. Texture: _______, _______, and _______________ of materials. – NOT how rough it feels. Composition: Most rocks are composed of individual grains of minerals called ________________________. Intergrown or interconnecting mineral crystals are ____________. Checklist A rock is igneous if it has: 1. __________________________________ A rock is metamorphic if it has: 1. __________________________________ 2. __________________________________ 2. __________________________________ 3. __________________________________ 3. __________________________________ A rock is sedimentary if it has: 1. __________________________________ 2. __________________________________ 3. __________________________________ 5 Exercise #4 – The Rock Cycle Answer the following questions using the ESRT and your knowledge or Earth Science. 1. Which would most likely occur during the formation of a sedimentary rock? 1) compression and cementation of sediments 3) recrystallization of unmelted material 2) solidification of molten materials 4) extreme amounts of heat and pressure 2. Metamorphic rocks form as a result of 1) melting and solidification 2) heat and pressure 3) erosion and deposition 4) wind and rain 3. A rock that has formed from the solidification of magma is most likely a 1) sedimentary rock 2) igneous rock 3) metamorphic rock 4) impossible to determine 4. According to the ESRT, which sequence of events occurs in the formation of a sedimentary rock? 1) source material eroded – sediments compacted and cemented – sediments deposited 2) source material eroded – sediments deposited – sediments compacted and cemented 3) sediments deposited – sediments compacted and cemented – source material eroded 4) source material eroded – sediments compacted and cemented – sediments deposited 5. When an igneous rock melts and then solidifies, it becomes 1) a sedimentary rock 2) an igneous rock 3) a metamorphic rock 4) a sediment 6. According to the rock cycle diagram in the ESRT, and igneous rock can not be changed directly into a 1) sediment 2) metamorphic rock 3) magma 4) sedimentary rock 7. What process must occur in order for a metamorphic rock to become a sediment? 1) solidification 2) deposition 3) weathering and erosion 4) heat and pressure 6 8. According to the ESRT is it possible for a sediment to erode and become a sediment again? Explain. _______ __________________________________________________________________________________________ __________________________________________________________________________________________ 9. Explain how a sedimentary rock can become an igneous rock. _____________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 10. Is it possible for magma to immediately become a metamorphic rock? Explain. _______________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 7 Exercise #4 – Sedimentary Rocks Complete the table below using your ESRT! Rock Name Clastic, Crystalline, Bioclastic Composition Method of Lithification Map Symbol 8 Exercise #5 – Sedimentary Rock Questions 1. What are the maximum and minimum dimensions (the size range) for the following particle sizes? a. cobble: _______________ b. pebble: _______________ c. sand: _______________ 2. Draw a picture of a pebble at its maximum size. 3. How can you distinguish a clastic (fragment) sedimentary rock from a chemically formed sedimentary rock? ______________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 4. Describe the sequence of events in the formation of an evaporate. __ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 5. Describe the sequence of events in the lithification of a sandstone. _ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 6. Explain why sedimentary rocks are found covering large areas of continental igneous rocks. _____________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 7. What is a monomineralic sedimentary rock? Give at least one example. ______________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 8. Explain the difference between conglomerate and breccia. What processes cause the difference? __________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 9 Exercise #6 – Igneous Rocks Complete the table below using your ESRT! Intrusive or Rock Name Color Texture Extrusive Minerals Present (%) Felsic / Mafic Density (g/ml) Other Observations 10 Exercise #7 – Igneous Rock Questions 1. Explain how the size of the mineral crystals in an igneous rock is affected by the rate at which molten rock cools. ____________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 2. List some characteristics or igneous rocks that can help you determine if a rock is intrusive or extrusive. ___ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 3. In general, how does the mineral composition of a light colored igneous rock differ from that of a dark colored igneous rock? _______________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 4. What criteria would you use to classify an igneous rock? _________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 5. What is the difference between magma and lava? _______________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 11 Exercise #8 – Metamorphic Rocks Complete the table below using your ESRT! Rock Name Map Symbol Foliated or Nonfoliated If foliated, give type Type of Metamorphism (Contact/Regional) Composition Probable Original Rock 12 Exercise #9 – Metamorphic Rock Questions 1. Explain why rocks formed by contact metamorphism are usually not as dense as those formed by regional metamorphism. _______________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 2. Explain why fossils are rarely found in metamorphic rocks. ____________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 3. Using the concept of density in your answer, explain why the minerals in metamorphic rocks often rearrange in layers. __________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 4. Based on what you have learned, would you rather build your house on metamorphic bedrock or sedimentary bedrock? Explain. _______________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 5. Explain the difference between gneiss and schist. What causes the difference? _________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 6. Explain the difference between conglomerate and metaconglomerate. ___________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 7. What processes are responsible for the formation of metamorphic rocks? _______________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ 13 Exercise #10 – Workbook Review Questions: Igneous Rocks Directions: 1. Answer questions #18-31 on pages #48-49 in your workbook in the space provided below. 2. Remember to look back at the reading from pages #45-48, your notes, and your ESRT. 18. __________ 23. __________ 28. __________ 19. __________ 24. __________ 29. __________ 20. __________ 25. __________ 30. __________ 21. __________ 26. __________ 31. __________ 22. __________ 27. __________ Exercise #11– Workbook Review Questions: Sedimentary Rocks Directions: 3. Answer questions #32-44 on pages #50-52 in your workbook in the space provided below. 4. Remember to look back at the reading, your notes, and your ESRT. 32. ____________ 37. ____________ 42. ____________ 33. ____________ 38. ____________ 43. ____________ 34. ____________ 39. ____________ 44. ____________ 35. ____________ 40. ____________ 36. ____________ 41. ____________ Exercise #12– Workbook Review Questions: Metamorphic Rocks Directions: 5. Answer questions #45-53 on pages #54-55 in your workbook in the space provided below. 6. Remember to look back at the reading, your notes, and your ESRT. 45. ____________ 48. ____________ 51. ____________ 46. ____________ 49. ____________ 52. ____________ 47. ____________ 50. ____________ 53. ____________ Exercise #13– Workbook Review Questions: Chapter Review Questions Directions: 7. Answer questions #59-61 on pages #1-26 in your workbook in the space provided below. 8. Remember to look back at the reading, your notes, and your ESRT. 1. ____________ 6. ____________ 11. ____________ 2. ____________ 7. ____________ 12. ____________ 3. ____________ 8. ____________ 13. ____________ 4. ____________ 9. ____________ 14. ____________ 5. ____________ 10. ____________ 15. ____________ 14 16. ____________ 20. ____________ 24. ____________ 17. ____________ 21. ____________ 25. ____________ 18. ____________ 22. ____________ 26. ____________ 19. ____________ 23. ____________ 15