Across
- 6. An object that is see-through
- 8. The frequencies of a wave
- 10. An electromagnetic wave that's used for long-distance communication
- 11. An increase or decrease in the frequency of sound as the source moves toward or away from an object or person
- 13. The range of wavelengths and frequencies
- 19. When a person is not able to distinguish colors
- 22. A wave that's shorter than a normal radio wave but longer than infrared rays
- 23. A ray of radiation that produces a thermal effect
Down
- 1. Sound waves with frequencies below the limit of human hearing
- 2. A wave between ultraviolet light and gamma rays
- 3. Wavelengths shorter than light but longer than X-rays
- 4. A wave with a shorter wavelength than x-rays
- 5. How high or low a sound is
- 7. Frequency modulator
- 9. The properties of a room that determines how sound is transmitted
- 11. A unit used to measure the intensity of a sound
- 12. The part of the Electromagnetic Spectrum that is visible to humans
- 14. A continuing effect; a repercussion
- 15. A pattern of beats and sounds
- 16. Tiny fluctuations in the air
- 17. A sound or vibration with an ultrasonic frequency
- 18. The extention of sound by reflection from a surface
- 20. A single noise
- 21. Amplitude modulator
- 23. The force or loudness of a sound