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6 Written questions

6 Multiple choice questions

  1. time for half # of radioactive atoms to change (decay) into different type of atoms
  2. layer eroded away, then new layers formed above
  3. animals without backbone; earliest animals; examples - insects, jellyfish, worms
  4. evidence left by living thing long ago; examples - tracks, tunnels, turds, nests, etc.
  5. fossils usually found in this type of rock
  6. Robert Bakker and other paleontologist think dinosaurs evolved into this

6 True/False questions

  1. law of superpositionolder layers = lower; younger layers = upper

          

  2. 4.6 billion years oldage of Earth based on age of oldest rocks found

          

  3. intrusionvolcanic lava layer on surface

          

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

          

  5. extinctgone forever; examples - dinosaurs, trilobites

          

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

          

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