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History of Life

Quiz by Dieterle 1

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22 questions
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  • Q1
    scientist who studies fossils
    paleontologist
    30s
  • Q2
    information about past life, including the structure of organisms, what they ate, what ate them, in what environment they lived, and the order in which they lived
    fossil record
    30s
  • Q3
    term used to refer to a species that has died out
    extinct
    30s
  • Q4
    method of determining the age of a fossil by comparing its placement with that of fossils i other layers of rock
    relative dating
    30s
  • Q5
    fossils of easily recognized species used to compare the relative ages of fossils
    index fossil
    30s
  • Q6
    length of time required for half of the radioactive atoms in a sample to decay
    half-life
    30s
  • Q7
    technique in which scientists calculate the age of a sample based on the amount of remaining radioactive isotopes it contains
    radioactive dating
    30s
  • Q8
    scale used by paleontologists to represent evolutionary time
    geologic time scale
    30s
  • Q9
    one of several subdivisions of the time between the Precambrian and the present; made up of periods
    era
    30s
  • Q10
    unit of time into which eras are subdivided
    period
    30s
  • Q11
    event in which many types of living things become extinct at the same time
    mass extinction
    30s
  • Q12
    body parts, eggs, and footprints
    examples of fossils
    30s
  • Q13
    where most fossils form
    sedimentary rock
    30s
  • Q14
    Earth's most recent era; also called the Age of Mammals
    Cenozoic
    30s
  • Q15
    era that occurred after the Paleozoic; also called the Age of Reptiles
    Mesozoic
    30s

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