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5 Written questions

5 Matching questions

  1. eons
  2. invertebrates
  3. trilobite
  4. epochs
  5. unconformity
  1. a ocean animal now extinct; used to be very common arthropod; used as index fossil
  2. b animals without backbone; earliest animals; examples - jellyfish, worms, clams, snails, insects
  3. c longest amounts of geologic time
  4. d smallest amounts of geologic time; some time periods are broken up into several of these; examples: Pennsylvanian and Missippian
  5. e layer eroded away , then new layers formed above; missing part of fossil record

5 Multiple choice questions

  1. even smaller amounts of geologic time; an era is broken up into several of these; examples: Cambrian, Silurian, Devonian
  2. most paleontologists think feathered dinosaurs evolved into these
  3. smaller amounts of geologic time; an eon is broken up into this; examples: Paleozoic, Mesozoic, Cenozoic
  4. living thing dies and body / parts slowly replaced by minerals; example - logs, bones, shells
  5. older layers = lower; younger layers = upper

5 True/False questions

  1. intrusionmagma squeezed up from below; cools slowly underground to form igneous rock with larger crystals such as granite; younger than layers it cuts through

          

  2. mass extinctiongone forever; examples - dinosaurs, trilobites

          

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

          

  4. extrusionmagma squeezed up from below; cools slowly underground to form igneous rock with larger crystals such as granite; younger than layers it cuts through

          

  5. absolute agespecific age of rock or fossil; example - rock layer A is 25 myo; figured out by radioactive dating