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6 Written questions

6 Multiple choice questions

  1. one element changes over time to another element; gives off energy; used to figure out how old rocks/fossils are
  2. magma squeezed up from below; younger than layers it cuts through
  3. evidence left by living thing long ago; examples - tracks, tunnels, turds, nests, etc.
  4. fossils usually found in this type of rock
  5. time for half # of radioactive atoms to change (decay) into different type of atoms
  6. huge #s of living things dying off at one time; usually a tragic event causes it

6 True/False questions

  1. 4.6 billion years oldliving thing dies and body / parts slowly replaced by minerals; example - logs, bones, shells

          

  2. trilobitetime for half # of radioactive atoms to change (decay) into different type of atoms

          

  3. invertebratesocean animal now extinct; used to be very common arthropod; used as index fossil

          

  4. relative agecomparison; younger vs. older; not exact

          

  5. birdsgone forever; examples - dinosaurs, trilobites

          

  6. unconformityocean animal now extinct; used to be very common arthropod; used as index fossil

          

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