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- 1. Multiple ChoiceSound requires a medium.TrueFalse
- 2. Multiple ChoiceSound will travel through water at 20⁰ C faster than 80⁰ C.TrueFalse
- 3. Multiple ChoiceThe amount of energy a wave carries determines its amplitude.TrueFalse
- 4. Multiple ChoiceThe amount of energy a wave carries determines its amplitude.TrueFalse
- 5. Multiple ChoiceLoudness is how high or low a sound seems to be.TrueFalse
- 6. Multiple ChoiceWhen a listener moves toward the source of a sound wave, the compressions of the wave are spread out.TrueFalse
- 7. Multiple ChoiceThe process of finding objects by emitting sounds and interpreting their reflections is called reverberations (echoes).TrueFalse
- 8. Multiple ChoiceUltrasound can be used to break up kidney stones.TrueFalse
- 9. Multiple ChoiceSound travels in a ___ wave.transversecompressionalsurfaceinverted
- 10. Multiple ChoiceThe speed of sound in ___ is greater than the speed of sound in water.airsteelcorkwater vapor
- 11. Multiple ChoiceIf the intensity of a sound decreases, the ___ decreaseswavelengthspeedpitchloudness
- 12. Multiple ChoiceA sound intensity above ___ may cause permanent hearing damage.0 dB90 dB120 dB150 dB
- 13. Multiple ChoiceThe unit used to measure frequency is the ___.newtonjouledecibelhertz
- 14. Multiple ChoiceFor the Doppler effect to occur, ___.the sound source must be movingthe listener must be movingboth the source and listener must be movingeither source or listener must be moving
- 15. Multiple ChoiceReverberation (echoes) in concert halls is caused by ___ of sound.reflectionsecholocationrefractionsdiffusions
- 16. Multiple ChoiceBats use ___ to navigate and find prey.infrasoundecholocationthe Doppler effectsonar
- 17. Multiple ChoiceA system of using the reflection of underwater sound waves is ___.acousticsradarsonarresonance
- 18. Multiple ChoiceScientists and engineers may recommend carpets and draperies for the walls of a concert hall to reduce excess ___.echolocationreverberation (echo)frequencyamplitude
- 19. Multiple ChoiceSound is caused by ___.energya wavea mediumvibrations
- 20. Multiple ChoiceAs the amplitude of a sound increases, the loudnessincreasesdecreasesdoes not changecancels out
- 21. Multiple ChoiceSound waves with frequencies greater than 20,000 Hz are called ___ waves.transversemechanicalelectromagneticultrasound
- 22. Multiple ChoiceAs the frequency of a sound wave ___, the pitch becomes lower.increasesdecreasesdoes not changecancels out
- 23. Multiple Choice___ is the study of sound.AcousticsReverberationEcholocationInfrasound
- 24. Multiple ChoiceThe differences among sounds of the same pitch and loudness is described as the ____ of the sound.qualitypitchfrequencyresonance
- 25. Multiple Choice___ is when two frequencies match up and increase in amplitude. Example: Singers can make a glass break by matching its frequency.PitchResonanceFrequencyUltrasound
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