1. the frequency of sound is measured in________?? 2. the voice box is also called ____?? 3. sound with frequency more than 20,000 Hz is called ______sound?? 4. Sound travels fastest in ____?? 5. Irregular sound that does not have rhythm is called___??
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Answer:
1. Hertz (Hz)
2. Larynx
3. Ultrasonic Sounds
4. Solids
5. Noise
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Hertz, larynx ,ultrasonic sound , solids , noise
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