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A. medium 13. Sound travels faster in B. temperature of the medium C. ) Both of these A. air at 10 degrees Celsius (B.) air at 30 degrees Celsius C. water Conceptual Physics 5.4 Sound Class Set DO NOT WRITE ON THIS COPY Version 1 1. The loudness of a musical sound is a measure of the sound wave's A. amplitude B. speed C. frequency D. wavelength 2. The speed of a sound wave is determined by A. its amplitude B. its intensity C. its pitch D. its medium Sound waves cannot travel in A. air B. water C. solids D. a vacuum . Resonance occurs when an object vibrates A. below its natural frequency B. at its natural frequency C. above its natural frequency 5. In a longitudinal wave the vibrations are to the direction of the waves motion. A. parallel B. perpendicular C. both D. neither 6. The range of human hearing is from about A. 10 to 10,000 Hz B. 10 to 20,000 Hz C. 20 to 20,000 Hz D. 20 to 40,000 Hz 7. A standing wave occurs when A. a longitudinal and transverse wave interact C. the amplitude exceeds the wavelength B. the speed of the wave is zero D. a wave reflects upon itself 8. A node is a position of A. constructive interference B. destructive interference 9. Compressions and rarefactions are characteristic of A. longitudinal waves B. transverse waves C. both of these D. none of these 10. The distance between adjacent nodes (nodes that are next to each other) in a standing wave is A. 1/4 2 B. 1/2 2 C. a D. 2 2 1 1. The source of all sounds is something that is A. vibrating B. moving C. accelerating D. harmonic 12. Sound travels faster in A. air B. water C. solids D. a vacuum 13. Sound waves can interfere with each other so that no sound is produced. A. True B. False 14. The pitch of musical sound depends on the sound wave's A. amplitude B. speed C. frequency D. wavelength 15. When you increase the tension in a guitar string, what characteristic of sound are you changing? A. amplitude B. speed C. frequency D. wavelength 16. When you increase the tension in a guitar string, what characteristic of sound remains the same? . wavelength