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What is a “mineral streak?”

What is a “mineral streak?”. 100. Streak = color of the powdered form. Or… Streak = color of mineral dust. 100. What mineral property does the Mohs scale describe?. 200. Mohs Scale = Relative Hardness. 200.

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What is a “mineral streak?”

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  1. What is a “mineral streak?” 100

  2. Streak = color of the powdered form. Or… Streak = color of mineral dust. 100

  3. What mineral property does the Mohs scale describe? 200

  4. Mohs Scale = Relative Hardness 200

  5. Give an example of a hardness value for a mineral that scratches a knife blade (5.1) but leaves a streak on a streak plate (6.5) 300

  6. (5.1) < Mineral < (6.5) Knife < Mineral < Streak Plate 300

  7. What does the nucleus of an atom include? 400

  8. Nucleus includes P+ and No 400

  9. What are the four processes of mineral formation? 500

  10. Crystallization Precipitation Changes (in temp & pressure) Hydrothermal Solutions “crazy people chase hippos” 500

  11. What is a rock? 100

  12. A rock is a natural, solid mass of more than one mineral. 100

  13. How are rocks classified? 200

  14. Rocks are classified by how they were formed. 200

  15. Which type of rock process is powered by energy from the sun? 300

  16. Formation of sedimentary rocks. Wind, pressure, water cycle… 300

  17. A rock that was formed very slowly will have ______ crystals. 400

  18. Slow = Large Crystals 400

  19. How are weathering, sediment, erosion, and deposition related? 500

  20. Rocks are weathered, turn into sediment, which is eroded (moved), and deposited somewhere else. 500

  21. Define “weathering” 200

  22. Weathering = breaking rocks into sediment. 200

  23. “Cementation” is the process in which sediment becomes _______ together. 300

  24. Cementation: “Cemented” “Stuck” “Glued” 300

  25. Describe a “biochemical” sedimentary rock. 400

  26. Biochemical Sedimentary rocks are made of “smushed” dead organisms. 400

  27. Daily Double! Describe “clastic” sedimentary rocks. 1000

  28. “clastic” sedimentary rocks Pebbles and sand that are compacted and cemented together. 1000

  29. How are igneous rocks formed? 100

  30. Cooling magma or lava. 100

  31. What type of igneous rock is formed from cooling lava? 200

  32. Intrusive Igneous rocks. 200

  33. Daily Double! Why do porphyritic rocks have different crystal sizes? 600

  34. Some crystals form fast and others form slow. 600

  35. What is the difference between Constructive & Deconstructive forces? 400

  36. Constructive = + add Earth Deconstructive = - subtract Earth 400

  37. Give three examples of renewable resources. 500

  38. Answers will vary. • Paper • Apples • Cotton • Replenish supply quickly 500

  39. If a metamorphic rock melts and then cools it will become a ______ rock. 100

  40. Igneous rock. 100

  41. Metamorphic rocks are formed from sedimentary rocks that have been exposed to extreme ______ and ______. 200

  42. Heat Pressure 200

  43. What are the 2 types of metamorphism? 300

  44. Contact metamorphism Regional metamorphism 300

  45. Nonfoliated metamorphic rocks do not have _______. 500

  46. Nonfoliated do not have bands, stripes, or layers. 500

  47. Final

  48. Name five mineral properties that we have discussed in class.

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