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5 Written questions

5 Matching questions

  1. unconformity
  2. relative age
  3. law of superposition
  4. uniformitarianism
  5. trilobite
  1. a ocean animal now extinct; used to be very common arthropod; used as index fossil
  2. b older layers = lower; younger layers = upper
  3. c geology that happened in past, happens now, and will in future too; constant change in Earth; James Hutton idea
  4. d comparison; younger vs. older; not exact
  5. e layer eroded away , then new layers formed above; missing part of fossil record

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. time for half # of radioactive atoms to change (decay) into different type of atoms
  3. evidence left by living thing long ago; examples - tracks, tunnels, turds, nests, etc.
  4. fossils usually found in this type of rock
  5. age of Earth based on age of oldest rocks found

5 True/False questions

  1. epochslongest amounts of geologic time

          

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

          

  3. radioactive decayone element changes over time to another element; gives off energy; used to figure out how old rocks/fossils are

          

  4. eonslongest amounts of geologic time

          

  5. petrified fossilevidence left by living thing long ago; examples - tracks, tunnels, turds, nests, etc.