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Conceptual Physics 5.4 Sound Class Set DO NOT WRITE ON THIS COPY Version 2 1. The source of all sounds is something that is A. moving B. vibrating C. accelerating D. harmonic 2. Sound travels faster in A. a vacuum B. air C. water D. solids 3. Sound waves can interfere with each other so that no sound is produced. A. True B. False 4. A standing wave occurs when A. a longitudinal and transverse wave interact C. a wave reflects upon itself B. the speed of the wave is zero D. the amplitude exceeds the wavelength 5. The pitch of musical sound depends on the sound wave's A. amplitude B. frequency C. speed D. wavelength 6. Sound waves cannot travel in A. a vacuum B. air C. water D. solids 7. Compressions and rarefactions are characteristic of A. transverse waves B. longitudinal waves C. both of these D. none of these 8. The distance between adjacent nodes (nodes that are next to each other) in a standing wave is A. 21 B. a C. 1/2 2 D. 1/4 2 9. When you increase the tension in a guitar string, what characteristic of sound are you changing? A. amplitude B. frequency C. speed D. wavelength 10. A node is a position of A. destructive interference B. constructive interference 1 1. When you increase the tension in a guitar string, what characteristic of sound remains the same? A. amplitude B. frequency C. speed D. wavelength 12. The loudness of a musical sound is a measure of the sound wave's A. frequency B. speed C. wavelength D. amplitude 13. The speed of a sound wave is determined by A. its amplitude B. its pitch C. its medium D. its intensity 14. In a longitudinal wave the vibrations are to the direction of the waves motion. A. perpendicular B. parallel C. both D. neither 15. The range of human hearing is from about A. 10 to 20,000 Hz B. 20 to 20,000 Hz C. 20 to 40,000 Hz D. 40 to 40,000 Hz 16. Resonance occurs when an object vibrates A. at its natural frequency B. below its natural frequency C. above its natural frequency