Summative Assessment Crossword Puzzle

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Across
  1. 5. plates that rub together to form earthquakes
  2. 8. when two or more species affect each others evolution
  3. 10. where Earth's tectonic plates dive back into the mantle
  4. 11. Piece of debris from space
  5. 12. the study of magnetic fields
  6. 13. using oxygen to live
  7. 15. a non-living part of an ecosystem that shapes its environment
  8. 16. stable part of the continental lithosphere
  9. 18. something that exists between two tectonic plates that are moving away from each other
  10. 19. pieces of Earth's crust and upper mantle
Down
  1. 1. not having to use oxygen to live
  2. 2. The study of earthquakes
  3. 3. the time required for the radioactivity of an isotope to fall to half its original value
  4. 4. determining the relative order of past events
  5. 6. a technique which is used to date materials such as rocks or carbon
  6. 7. a wave of energy that travels through the Earth
  7. 8. an area on Earth where two or more lithospheric plates collide
  8. 9. two or more types of atoms
  9. 14. living organisms in the ecosystem
  10. 17. motion in a liquid which the warmer portions rise and the lower portions sink