Science Study guide 6

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Science Study guide 6
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2013-11-18 13:11:56
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  1. Catastrophism
    The view that most of the earth's geological features are the result of large-scale catastrophes such as floods, volcanic eruptions, ect.
  2. Uniformitarianism
    The view that most of the earth's geological features of slow gradual processes that been at work for millions or even billions of years.
  3. Humus
    The decayed remains of once-living creatures
  4. Minerals
    Inorganic crystalline substances found naturally in the earth
  5. Weathering
    The process by which rocks are broken down by the forces of nature.
  6. Erosion
    The process by which sediments and rocks fragments are carried away by wind or rain
  7. Unconformity
    A surface of erosion that separates one layer of rock from another
  8. What hypothesis ( uniformitarianism or catastrophism) requires that the earth be billions of years old?
    Uniformitarianism
  9. What are the three basic types of rocks?
    sedimentary rock, igneous rock, metamorphic rock
  10. How is each type of rock in #3 formed?
    • Sedimentary rock is formed from sediments( sand, silt, and other components of soil).
    •  Igneous rock is formed from molten rock.
    • Metamorphic rock goes through an extreme change due to lots of heat pressure.
  11. What agent is most responsible for laying down most of the sedimentary rock that we see today?
    Water
  12. A rock in the desert is constant bombarded by bits of sand that are carried on the wind. The sand hits the rock so hard sometimes that tiny chips of the rock are broken off. As time goes on, the constant beating of the rock wears the rock down, and it gets much smaller. Has this rock gone through physical weathering of chemical.
    Physical weathering
  13. When limestone is exposed to weakly acidic water, it breaks down, forming a gas in the process. Is this chemical or physical weathering?
    Chemical weathering
  14. A geologist is comparing the erosion that occurs as result of two rivers. The first river flows quickly while the second one flows slowly. Which river will cause more erosion?
    The fast flowing river
  15. Two hillsides in the same community experience a very heavy rain.  The first hillside is covered with grass and flowers, while the second is mostly bare. Which hillside will experience the erosion?
    The bare one
  16. Where do a large part of sediments carried by the river end up?
    In a large lake or ocean
  17. What causes an underground cavern to form?
    When ground water erodes rock underground
  18. What is difference between a stalactite and a stalagmite?
    Stalactite hangs from the ceiling of caves. Stalagmite comes from the ground of caves.
  19. What causes stalactite and stalagmite to form?
    They arte made when water drips in caves
  20. Which letter identifies metamorphic rock?
    C
  21. Which letters identify igneous rock?
    A E
  22. Which letters identifies sedimentary rock?
    D
  23. The unconformity B is what type of unconformity?
    angular
  24. what letter identifies intrusion?
    A

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