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Super Quiz
2010-10-28 12:16:23
Focus quiz

Geological time 1 (beginning-absolute)
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  1. The term for finding the age of a rock is
    e. chronostratigraphy
  2. The absolute age of an object refers to
    e. exactly how many years before today an object was formed
  3. All of the following statements about nuclear decay are true except
    b. heat is an important reactant in nuclear decay
  4. The nuclear decay of 14C involves
    d. a neutron splitting
  5. After nuclear decay, 14C becomes
    d. Nitrogen
  6. According to the authors of "Geological Time," how many pieces of information are needed about a radioactive isotope to use the isotope in absolute dating?
    e. three
  7. Radioactive dating methods
    d. include measurements based off of radioactive isotopes
  8. The rate of decay for radioactive samples
    e. is constant for any given isotope
  9. How is the decay of radioactive samples typically expressed?
    d. half-life
  10. Which of the following isotopic systems has a half-life of 48.8 billion years?
    c. 87Rb/87Sr
  11. Who wrote "Geological Time"?
    c. David E. Fastovsky, Thomas Jordan, Frank Press, and John Sibbick
  12. The authors compare using the rubdium/strontium isotopic system to date remains from the past several thousand years to
    c. time a hundred meter dash with a sundial
  13. Radiometric dating can only take place using samples obtained from
    a. igneous rock
  14. The Mesozoic Era lasted from
    d. 251 to 65 million years ago
  15. The Paleoxoic Era did not include
    d. Cretaceous Period