Gebhardt---relative/Absolute Age And Half-life Notes Quiz

5 Questions | Total Attempts: 152

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Gebhardt---relative/Absolute Age And Half-life Notes Quiz


Questions and Answers
  • 1. 
    Rocks that can be dated using absolute dating are mostly ____.
    • A. 

      Metamorphic rocks

    • B. 

      Metamorphic and igneous rocks

    • C. 

      Sedimentary and metamorphic rocks

    • D. 

      Igneous and sedimentary rocks

  • 2. 
    Which element is used for dating matter that was once living but is less than 75,000 years old?
    • A. 

      Uranium-238

    • B. 

      Potassium-40

    • C. 

      Carbon-14

    • D. 

      Argon-40

  • 3. 
    Radiometric dating has been used to date the oldest rocks on Earth and scientists now estimate the Earth to be ____.
    • A. 

      3.96 billion years old

    • B. 

      4.6 billion years old

    • C. 

      A few thousand years old

    • D. 

      2.0 million years old

  • 4. 
    When I look at the relationship of parent and daughter material, what percentage of daughter material will be present if there is 25% of the parent material?
    • A. 

      55%

    • B. 

      25%

    • C. 

      100%

    • D. 

      75%

  • 5. 
    How long will it take for 30 grams of radon to decay to 7.5 grams if radon has a half-life of 3.82 days?
    • A. 

      0 days

    • B. 

      3.82 days

    • C. 

      7.64 days

    • D. 

      11.46 days

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