Geology Midterm

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Author:
bry2011
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105771
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Geology Midterm
Updated:
2011-10-02 14:40:13
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Geo study guide
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on quiz one, two, and three
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  1. A unglazed porcelain plate is used to test for?
    Cleavage
  2. A subatomic particle that contributes mass and a single positive electrical charge best defines?
    Proton
  3. The type of bonding between Na (soduim) and Cl (chlorine) in halite (salt) is?
    Ionic
  4. Is topaz generally considered to be 7 on the Mohs' hardness scale.
    False
  5. The mineral on the Mohs' hardness scale which will react with hydrochloric acid (HCL)?
    Calcite
  6. The two most common elements in the Earth's crust are oxygen and?
    Silicon
  7. Atoms with either a positive or negative charge are called?
    Ions
  8. Atoms containing different numbers of neutrons but the same number of protons are called?
    Isotopes
  9. What is the most common mineral found in the Earth's crust?
    Feldspar
  10. The ability of a mineral to break along preferred planes is called?
    Streak
  11. In the field, geologists that can generally separate a plutonic rock from a volocanic rock by the?
    Texture
  12. A sill normally cuts across the existing country rock?
    False
  13. A dark colored volcanic rock containing abundant vesicles (cavities)would best describe?
    Scorcia
  14. Lava that is characterized by a ropy or billowy surface is called?
    Pahoehoe
  15. Most of the world's largest volcanoes (e.g., Mauna Loa) are?
    Shield Volcanoes
  16. The ocean floor mostly consists of what common igneous rock?
    Rhyolite
  17. A change in mamga composition due to melting of surrounding country rock?
    Assimilation
  18. A pyroclastic flow consists of a mixture of gas and pyroclastic material that is so dense that it hugs the ground as it flows rapidly into low areas?
    True
  19. Which plutonic igneous rock is larger?
    Batholith
  20. Which is not a plutonic igneous rock?
    Diorite
  21. Which sedimentary rock would react with hydrochloric acid (HCI)?
    Limestone
  22. In graded bedding, the individual particle sizes?
    Decreases downward
  23. Compaction and cementation are associated with?
    Lithification
  24. A sandstone containing more than 25% feldspar could be referred to as an?
    Arkose
  25. What two characteristics are mostly used to classify sedimentary rocks?
    Texture and composition
  26. A hard, fine-grained clastic sedimentary rock formed almost entirely of silica best defines a?
    Chert
  27. A course-grained clastic sedimentary rock composed of angular fragments would be?
    Breccia
  28. A muddy sedimentary rock enviroment exposed to the air allowing the sediment to dry out will mostly likely produce?
    Mudcracks
  29. A sedimentary rock chiefly consisting of shell fragments is called a?
    Coquina
  30. What sedimenatary rock is formed from the consolidation of plant material?
    Coal
  31. How old is the earth?
    5.5 billion years old.
  32. What is the denisty of the earth?
    4.5
  33. What is directly below the lithosphere?
    Azinesphere
  34. What is the top of the lithosphere?
    The mantle
  35. What's in Silica?
    Oxygen and Silicate
  36. What are the three types of sedimentary rocks?
    Igneous, sedimentary and metimorphic.
  37. What's in Mafic?
    Iron
  38. What is 6 on the Moh's hardness scale?
    Feldspar
  39. What is 7 on the Mohs Hardness Scale?
    Quartz
  40. What type of rocks are Granite and Diorite?
    Volcanic rock
  41. What type of rocks are Basalt and Ryolite?
    Igneous rock
  42. What has a smooth body of lava?
    Pahoehoe
  43. What has a jaged body of lava?
    Pahaha
  44. What's the difference between a block and a bomb?
    Shape
  45. What is the world's smallest volcanoe called?
    Cinder cone
  46. Where do you get mudcracks?
    In evaporated places (e.g, deserts).
  47. What type of rock is coal?
    Sedimentary rock
  48. What is Content metamorphism?
    Causes heat "extreme heat".
  49. What type of rock is Arkose?
    Setimentary rock
  50. What type of rock is Slate?
    Foliated rock?
  51. Moh's hardness scale?
    Talc, Gympsm, Calcite, Flourize, Apetite, Feldspar, Quartz, Topaz, Corundum and Diamond.

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