IanJusticeKevin

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Across
  1. 3. waves that must travel through a medium
  2. 5. when energy bounces off a material
  3. 7. least dangerous light waves to some animals
  4. 11. the amount of times a wave repeats
  5. 12. second most dangerous ray to some animals
  6. 13. when energy passes through a material
  7. 14. when the wave hits the equilibrium
  8. 16. matter that sticks together
  9. 17. Also known as light
  10. 21. "stuff"
  11. 22. when waves change direction when hitting a medium
  12. 23. how frequency is measured
  13. 25. when energy stays within a material
  14. 27. radiation from the sun (2 words)
  15. 29. the matter that waves travel through
  16. 30. the top of a wave
Down
  1. 1. a light that most animals can see (2 words)
  2. 2. it can't be created nor destroyed, but can be converted
  3. 4. lowest point of a wave
  4. 6. midpoint of a wave
  5. 8. waves travel differently based on the _____ of the matter they hit
  6. 9. the distance (height) from a midpoint
  7. 10. the distance from crest to crest or trough to trough
  8. 15. EM that is not visible to the nake
  9. 18. human waves
  10. 19. waves produced in nature
  11. 20. when energy transmits in a scattered arrangement
  12. 24. most dangerous rays
  13. 26. the second least dangerous light waves to some animals
  14. 28. a scale that classifies different ideas and things