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Across 1. a sound wave is a ________________________ 5. absorbs all colors of the spectrum 7. the bending of a wave caused by a change in speed 9. lowest point of a wave 11. the number of waves per second 14. the weakest EM wave 17. the amount of energy in each sound wave 19. the height of a wave 20. AKA heat/thermal radiation

Down 2. transverse waves produced by the motion of electrically charged particles 3. the strongest EM wave 4. distance between two consecutive crests/troughs 6. material through which a wave transfers energy 7. a wave bouncing off of an object 8. a wave in which the medium moves at right angles to the direction of travel 10. an object that refracts white light into a rainbow 12. the human perception of sound intensity, measured in decibels 13. A rhythmic disturbance that carries energy through matter or space 15. reflects all colors of the spectrum 16. the highness or lowness of a sound 18. highest point of a wave