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5 Written questions

5 Matching questions

  1. mass extinction
  2. petrified fossil
  3. trilobite
  4. absolute age
  5. law of superposition
  1. a older layers = lower; younger layers = upper
  2. b specific age of rock or fossil; example - rock layer A is 25 myo; figured out by radioactive dating
  3. c living thing dies and body / parts slowly replaced by minerals; example - logs, bones, shells
  4. d ocean animal now extinct; used to be very common arthropod; used as index fossil
  5. e huge #s of living things dying off at one time; usually a tragic event that changes environment / climate fairly quickly causes it

5 Multiple choice questions

  1. comparison; younger vs. older; not exact
  2. animals without backbone; earliest animals; examples - jellyfish, worms, clams, snails, insects
  3. layer eroded away , then new layers formed above; missing part of fossil record
  4. longest amounts of geologic time
  5. smaller amounts of geologic time; an eon is broken up into this; examples: Paleozoic, Mesozoic, Cenozoic

5 True/False questions

  1. half-lifeocean animal now extinct; used to be very common arthropod; used as index fossil


  2. time periodsmost paleontologists think feathered dinosaurs evolved into these


  3. extinctgone forever; examples - dinosaurs, trilobites


  4. sedimentarycomparison; younger vs. older; not exact


  5. body fossilactual creatures or parts of them from the past (bones, whole insects in amber, wooly mammoths in ice, etc.)