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5 Written questions

5 Matching questions

  1. relative age
  2. extrusion
  3. epochs
  4. trilobite
  5. invertebrates
  1. a smallest amounts of geologic time; some time periods are broken up into several of these; examples: Pennsylvanian and Missippian
  2. b volcanic lava layer on surface (igneous rock)
  3. c ocean animal now extinct; used to be very common arthropod; used as index fossil
  4. d animals without backbone; earliest animals; examples - jellyfish, worms, clams, snails, insects
  5. e comparison; younger vs. older; not exact

5 Multiple choice questions

  1. magma squeezed up from below; cools slowly underground to form igneous rock with larger crystals such as granite; younger than layers it cuts through
  2. specific age of rock or fossil; example - rock layer A is 25 myo; figured out by radioactive dating
  3. fossils usually found in this type of rock
  4. living thing dies and body / parts slowly replaced by minerals; example - logs, bones, shells
  5. longest amounts of geologic time

5 True/False questions

  1. half-lifetime for half # of radioactive atoms to change (decay) into different type of atoms

          

  2. one- celledfirst living things on earth; similar to bacteria

          

  3. birdssmaller amounts of geologic time; an eon is broken up into this; examples: Paleozoic, Mesozoic, Cenozoic

          

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

          

  5. erassmaller amounts of geologic time; an eon is broken up into this; examples: Paleozoic, Mesozoic, Cenozoic

          

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