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6 Written questions

6 Multiple choice questions

  1. animals without backbone; earliest animals; examples - insects, jellyfish, worms
  2. layer eroded away, then new layers formed above
  3. magma squeezed up from below; younger than layers it cuts through
  4. geology that happened in past, happens now, and will in future too; constant change in Earth; James Hutton idea
  5. comparison; younger vs. older; not exact
  6. fossils usually found in this type of rock

6 True/False questions

  1. absolute agecomparison; younger vs. older; not exact


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


  3. petrified fossilliving thing dies and body / parts slowly replaced by minerals; example - logs, bones, shells


  4. extinctgone forever; examples - dinosaurs, trilobites


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


  6. mass extinctiongone forever; examples - dinosaurs, trilobites


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