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Quiz

Ch. 10 Reading Quiz

Guinevere Rudnick 12 Fragen

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Fragen in diesem Quiz (12)

  1. 1Which passage best defines the Principle of Uniformitarianism?
    1. ASediments originally accumulate in horizontal layers
    2. BEarth processes observed today also operated in the past at about the same rates
    3. CLayers lower in stratigraphic column are older than those above
    4. DSediments generally accumulate in continuous sheets across a region
    5. EIf one geologic feature cuts across another, the feature that is cut is older
  2. 2The geologic time scale was originally defined on the basis of:
    1. Afossil succession
    2. Bisotopic dating
    3. Cmagnetostratigraphy
    4. Dstratigraphic correlation
    5. Elithologic correlation
  3. 3Which of the following does NOT provide a numerical date?
    1. Acounting tree rings
    2. Bstudying growth increments in shells
    3. Cmeasuring thicknesses of sedimentary layers
    4. Dcomparing magnetic reversal stratigraphy between an outcrop and a reference column
    5. Ecounting ice layers in a glacier
  4. 4arbon-14 has a half-life of 5,730 years. A specimen analyzed in a lab contains only 1/8 of the original Carbon-14. How old is this specimen?

    [blank_start]17190[blank_end] years old
    1. A17190
  5. 5The largest subdivision of geologic time is called a/an:
    1. Aera
    2. Bperiod
    3. Ceon
    4. Dformation
    5. Eepoch
  6. 6How do we know that Earth is 4.57 billion years old?
    1. Aisotopic dating of rocks from Canada
    2. Bdating rocks from the moon
    3. Cdating grains of zircon from rocks in Australia
    4. Ddating meteorites
    5. Edating samples from Earths core
  7. 7It's not possible to say just when an individual radioactive atom will decay, but it is possible to say when half of an existing quantity of radioactive material will be gone.
    1. ARichtig
    2. BFalsch
  8. 8What does an unconformity in a rock sequence tell us?
    1. AIt defines the age of the rock layers.
    2. BIt reveals the order in which the rocks were originally deposited.
    3. CAn extinction event occurred in the fossil record.
    4. DThere is a gap in the geologic record.
    5. EThe rock layers must have been faulted in the past.
  9. 9Why do we have no rocks that date to Earth's initial formation?
    1. AThey have not yet been recovered from the crust.
    2. BThe earliest rocks are not preserved.
    3. CThe earliest rocks were destroyed by ancient volcanic eruptions.
    4. DThey are lost in a museum storage warehouse.
    5. ENone of the possible answers is correct.
  10. 10Identify the FALSE statement. Radiometric dating
    1. Acan begin only when the isotopes cool enough to lock into the crystal lattice
    2. Bcan be used only if there's some uranium present in the rock
    3. Cof sedimentary rock dates the time of crystallization of the sedimentary minerals, not the time of sedimentary rock formation
    4. Dof metamorphic rock tells when the high temperatures of metamorphism cooled below the blocking temperatures of the minerals involved
    5. Erequires determining the ratio of parent to daughter isotopes in a mineral

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Beschreibung
college Geology 101 Quiz am Ch. 10 Reading Quiz, erstellt von Guinevere Rudnick am 06/11/2015.
Sprache
English
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4
Schlagwörter
geology 101college
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