Module 2 Vocabulary Crossword Puzzle

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Across
  1. 5. Tectonic plates meet and the edge of one plate descends below the edge of the other.
  2. 8. Process where the nucleus of an unstable atom loses energy by emitting radiation.
  3. 10. Waves of energy that travel through the Earth's layers.
  4. 13. Representation on a map of the natural and artificial features of an area.
  5. 15. Living factor
  6. 16. Processes that help build up the Earth.
  7. 18. An absences of oxygen
  8. 19. The true age of a rock or fossil.
  9. 20. The presence of oxygen
  10. 21. Branch of science studying earthquakes.
Down
  1. 1. The structure of Earth's crust and results of the rigid plates that move over the mantle.
  2. 2. Meteor that survives its passage through the Earth's atmosphere and hits the ground.
  3. 3. Dating rocks using the relative proportions of particular radioactive isotopes.
  4. 4. Movement in a fluid where hotter and less dense matter rises and colder and less dense matter sinks.
  5. 6. Time taken for the isotope to decrease into half its original value.
  6. 7. Determining the relative order of past events or objects.
  7. 9. Non-living factor
  8. 11. Different forms of the same element that have a different number of neutrons.
  9. 12. Process by which rock is broken down, such as erosion and weathering.
  10. 14. Close relationship of two factors that cause them to impact how each other change.
  11. 17. branch of science studying the magnetism in rocks.