Quarter 2 Extra Credit

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Across
  1. 3. when light bends as it enters a different medium
  2. 4. is the number of waves that pass a point in a certain period of time.
  3. 6. this type of radiation has the lowest energy
  4. 7. where two plates move towards each other
  5. 10. this type of radiation has the highest energy
  6. 12. theory in which the earth is broken up into plates
  7. 13. where two plates slide against each other
Down
  1. 1. when light bounces off of a surface
  2. 2. where two plates move away from each other
  3. 5. a disturbance that travels through a medium from one location to another location.
  4. 8. space that has absolutely no matter
  5. 9. any substance that has mass and takes up space by having volume.
  6. 11. the only type of radiation that we can see